diff --git a/clients/abusive_experience_report/mix.exs b/clients/abusive_experience_report/mix.exs
index ea709321fb..df0ac4a9b3 100644
--- a/clients/abusive_experience_report/mix.exs
+++ b/clients/abusive_experience_report/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AbusiveExperienceReport.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/accelerated_mobile_page_url/mix.exs b/clients/accelerated_mobile_page_url/mix.exs
index 1c0849aac2..89777806a9 100644
--- a/clients/accelerated_mobile_page_url/mix.exs
+++ b/clients/accelerated_mobile_page_url/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AcceleratedMobilePageUrl.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/access_approval/mix.exs b/clients/access_approval/mix.exs
index 7ffa817dcf..54f108061a 100644
--- a/clients/access_approval/mix.exs
+++ b/clients/access_approval/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AccessApproval.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/access_context_manager/mix.exs b/clients/access_context_manager/mix.exs
index da6bbe6603..e7a7051239 100644
--- a/clients/access_context_manager/mix.exs
+++ b/clients/access_context_manager/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AccessContextManager.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/ad_exchange_buyer/mix.exs b/clients/ad_exchange_buyer/mix.exs
index 6466f1e10c..093236cb8d 100644
--- a/clients/ad_exchange_buyer/mix.exs
+++ b/clients/ad_exchange_buyer/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AdExchangeBuyer.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/ad_exchange_seller/mix.exs b/clients/ad_exchange_seller/mix.exs
index 933c55982c..d1eefc97a8 100644
--- a/clients/ad_exchange_seller/mix.exs
+++ b/clients/ad_exchange_seller/mix.exs
@@ -23,7 +23,7 @@ defmodule GoogleApi.AdExchangeSeller.V20.Mixfile do
   defp deps() do
     [
       {:google_gax, "~> 0.1.0"},
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/ad_experience_report/mix.exs b/clients/ad_experience_report/mix.exs
index c95a70fd65..4df553c47e 100644
--- a/clients/ad_experience_report/mix.exs
+++ b/clients/ad_experience_report/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AdExperienceReport.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/ad_mob/mix.exs b/clients/ad_mob/mix.exs
index ad309c3a4e..3acea72a42 100644
--- a/clients/ad_mob/mix.exs
+++ b/clients/ad_mob/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AdMob.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/ad_sense/mix.exs b/clients/ad_sense/mix.exs
index 8834ff89e0..dddccec5ba 100644
--- a/clients/ad_sense/mix.exs
+++ b/clients/ad_sense/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AdSense.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/ad_sense_host/mix.exs b/clients/ad_sense_host/mix.exs
index a980457818..9e3d98365f 100644
--- a/clients/ad_sense_host/mix.exs
+++ b/clients/ad_sense_host/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AdSenseHost.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/admin/mix.exs b/clients/admin/mix.exs
index 8fe36baf2f..6971fe1753 100644
--- a/clients/admin/mix.exs
+++ b/clients/admin/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Admin.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/alert_center/mix.exs b/clients/alert_center/mix.exs
index 1a5b15f12f..a7e1ad5cbf 100644
--- a/clients/alert_center/mix.exs
+++ b/clients/alert_center/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AlertCenter.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/analytics/mix.exs b/clients/analytics/mix.exs
index ce0430b182..7897c7dc67 100644
--- a/clients/analytics/mix.exs
+++ b/clients/analytics/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Analytics.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/analytics_admin/mix.exs b/clients/analytics_admin/mix.exs
index 1c8a4744ba..b2edc96cf8 100644
--- a/clients/analytics_admin/mix.exs
+++ b/clients/analytics_admin/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AnalyticsAdmin.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/analytics_data/mix.exs b/clients/analytics_data/mix.exs
index 37c2463d81..cac5cf25e1 100644
--- a/clients/analytics_data/mix.exs
+++ b/clients/analytics_data/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AnalyticsData.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/analytics_reporting/mix.exs b/clients/analytics_reporting/mix.exs
index ed0807d7a3..0da9d02e80 100644
--- a/clients/analytics_reporting/mix.exs
+++ b/clients/analytics_reporting/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AnalyticsReporting.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/android_device_provisioning/mix.exs b/clients/android_device_provisioning/mix.exs
index 0f04b1039f..6f1fed645a 100644
--- a/clients/android_device_provisioning/mix.exs
+++ b/clients/android_device_provisioning/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AndroidDeviceProvisioning.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/android_enterprise/mix.exs b/clients/android_enterprise/mix.exs
index 581d81b178..41fde550d1 100644
--- a/clients/android_enterprise/mix.exs
+++ b/clients/android_enterprise/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AndroidEnterprise.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/android_management/mix.exs b/clients/android_management/mix.exs
index bbb773bff5..038381dcdc 100644
--- a/clients/android_management/mix.exs
+++ b/clients/android_management/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AndroidManagement.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/android_publisher/mix.exs b/clients/android_publisher/mix.exs
index 164b5ef9a7..3d41f7612a 100644
--- a/clients/android_publisher/mix.exs
+++ b/clients/android_publisher/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AndroidPublisher.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/api_gateway/mix.exs b/clients/api_gateway/mix.exs
index 200e721288..6f1a7dd476 100644
--- a/clients/api_gateway/mix.exs
+++ b/clients/api_gateway/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.APIGateway.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/api_keys/mix.exs b/clients/api_keys/mix.exs
index 452223f375..1cefa0dbcc 100644
--- a/clients/api_keys/mix.exs
+++ b/clients/api_keys/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.APIKeys.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/apigee/mix.exs b/clients/apigee/mix.exs
index 031b56efe3..52da72a205 100644
--- a/clients/apigee/mix.exs
+++ b/clients/apigee/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Apigee.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/app_engine/mix.exs b/clients/app_engine/mix.exs
index 1c52f660d4..17119b6771 100644
--- a/clients/app_engine/mix.exs
+++ b/clients/app_engine/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AppEngine.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/app_state/mix.exs b/clients/app_state/mix.exs
index 1479a4095e..c3175fc4c8 100644
--- a/clients/app_state/mix.exs
+++ b/clients/app_state/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AppState.Mixfile do
     [
       {:google_gax, "~> 0.2"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/apps_activity/mix.exs b/clients/apps_activity/mix.exs
index 9eae6c8e6b..464dc8d3d8 100644
--- a/clients/apps_activity/mix.exs
+++ b/clients/apps_activity/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AppsActivity.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/area120_tables/mix.exs b/clients/area120_tables/mix.exs
index bd7465ec85..112e3f5e66 100644
--- a/clients/area120_tables/mix.exs
+++ b/clients/area120_tables/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Area120Tables.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/artifact_registry/mix.exs b/clients/artifact_registry/mix.exs
index 8b46ffd0fc..35888ad224 100644
--- a/clients/artifact_registry/mix.exs
+++ b/clients/artifact_registry/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.ArtifactRegistry.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/assured_workloads/mix.exs b/clients/assured_workloads/mix.exs
index 223d356fd9..023f7ba605 100644
--- a/clients/assured_workloads/mix.exs
+++ b/clients/assured_workloads/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AssuredWorkloads.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/authorized_buyers_marketplace/mix.exs b/clients/authorized_buyers_marketplace/mix.exs
index dd212eada1..12e721855e 100644
--- a/clients/authorized_buyers_marketplace/mix.exs
+++ b/clients/authorized_buyers_marketplace/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.AuthorizedBuyersMarketplace.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/bare_metal_solution/mix.exs b/clients/bare_metal_solution/mix.exs
index 35aab8f55b..60081a051f 100644
--- a/clients/bare_metal_solution/mix.exs
+++ b/clients/bare_metal_solution/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.BareMetalSolution.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/big_query/mix.exs b/clients/big_query/mix.exs
index e6d4779cab..f4b85022e4 100644
--- a/clients/big_query/mix.exs
+++ b/clients/big_query/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.BigQuery.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/big_query_connection/mix.exs b/clients/big_query_connection/mix.exs
index 0022c0821a..d1a00c300a 100644
--- a/clients/big_query_connection/mix.exs
+++ b/clients/big_query_connection/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.BigQueryConnection.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/big_query_data_transfer/mix.exs b/clients/big_query_data_transfer/mix.exs
index 49b3c9e328..90c43848ef 100644
--- a/clients/big_query_data_transfer/mix.exs
+++ b/clients/big_query_data_transfer/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.BigQueryDataTransfer.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/big_query_reservation/mix.exs b/clients/big_query_reservation/mix.exs
index d271a5bf33..924f018482 100644
--- a/clients/big_query_reservation/mix.exs
+++ b/clients/big_query_reservation/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.BigQueryReservation.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/bigtable_admin/mix.exs b/clients/bigtable_admin/mix.exs
index 719f2e4dda..2e36c170ea 100644
--- a/clients/bigtable_admin/mix.exs
+++ b/clients/bigtable_admin/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.BigtableAdmin.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/billing_budgets/mix.exs b/clients/billing_budgets/mix.exs
index e8bd66ad9d..9d1bc469a2 100644
--- a/clients/billing_budgets/mix.exs
+++ b/clients/billing_budgets/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.BillingBudgets.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/binary_authorization/mix.exs b/clients/binary_authorization/mix.exs
index 106ba2c0c4..2f65fbf8ef 100644
--- a/clients/binary_authorization/mix.exs
+++ b/clients/binary_authorization/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.BinaryAuthorization.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/blogger/mix.exs b/clients/blogger/mix.exs
index d0820e8bcc..04d3be9103 100644
--- a/clients/blogger/mix.exs
+++ b/clients/blogger/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Blogger.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/books/mix.exs b/clients/books/mix.exs
index 03900444a7..99cfb1ffe6 100644
--- a/clients/books/mix.exs
+++ b/clients/books/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Books.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/calendar/mix.exs b/clients/calendar/mix.exs
index bc2e47bd82..f531ec1217 100644
--- a/clients/calendar/mix.exs
+++ b/clients/calendar/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Calendar.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/chat/mix.exs b/clients/chat/mix.exs
index 8bc42d5ed7..07a37b42e4 100644
--- a/clients/chat/mix.exs
+++ b/clients/chat/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Chat.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/chrome_management/mix.exs b/clients/chrome_management/mix.exs
index 567376e980..dbc8996e23 100644
--- a/clients/chrome_management/mix.exs
+++ b/clients/chrome_management/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.ChromeManagement.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/chrome_policy/mix.exs b/clients/chrome_policy/mix.exs
index 897927d62e..69e3000f29 100644
--- a/clients/chrome_policy/mix.exs
+++ b/clients/chrome_policy/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.ChromePolicy.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/chrome_ux_report/mix.exs b/clients/chrome_ux_report/mix.exs
index b1163df832..913e9382e3 100644
--- a/clients/chrome_ux_report/mix.exs
+++ b/clients/chrome_ux_report/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.ChromeUXReport.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/civic_info/mix.exs b/clients/civic_info/mix.exs
index 15066df4b3..9eb3af94c6 100644
--- a/clients/civic_info/mix.exs
+++ b/clients/civic_info/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CivicInfo.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/classroom/mix.exs b/clients/classroom/mix.exs
index ed3f3f3a76..63d451bb0e 100644
--- a/clients/classroom/mix.exs
+++ b/clients/classroom/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Classroom.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_asset/mix.exs b/clients/cloud_asset/mix.exs
index f7f7c4bd08..cc8d24feb6 100644
--- a/clients/cloud_asset/mix.exs
+++ b/clients/cloud_asset/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudAsset.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_billing/mix.exs b/clients/cloud_billing/mix.exs
index 09ba00d878..068cf3f1f3 100644
--- a/clients/cloud_billing/mix.exs
+++ b/clients/cloud_billing/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudBilling.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_build/mix.exs b/clients/cloud_build/mix.exs
index f419f402f8..0e8208c9d2 100644
--- a/clients/cloud_build/mix.exs
+++ b/clients/cloud_build/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudBuild.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_channel/mix.exs b/clients/cloud_channel/mix.exs
index d64ab4cac5..8f93fa37ac 100644
--- a/clients/cloud_channel/mix.exs
+++ b/clients/cloud_channel/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudChannel.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_debugger/mix.exs b/clients/cloud_debugger/mix.exs
index e73929f761..142f445274 100644
--- a/clients/cloud_debugger/mix.exs
+++ b/clients/cloud_debugger/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudDebugger.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_deploy/mix.exs b/clients/cloud_deploy/mix.exs
index b6983c364e..212ebe89d8 100644
--- a/clients/cloud_deploy/mix.exs
+++ b/clients/cloud_deploy/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudDeploy.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_error_reporting/mix.exs b/clients/cloud_error_reporting/mix.exs
index 3167171ee1..ce07d2ce6f 100644
--- a/clients/cloud_error_reporting/mix.exs
+++ b/clients/cloud_error_reporting/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudErrorReporting.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_functions/mix.exs b/clients/cloud_functions/mix.exs
index 0d3f0b7d8a..85cccca429 100644
--- a/clients/cloud_functions/mix.exs
+++ b/clients/cloud_functions/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudFunctions.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_identity/mix.exs b/clients/cloud_identity/mix.exs
index bd1ffa3c42..96b79d9a20 100644
--- a/clients/cloud_identity/mix.exs
+++ b/clients/cloud_identity/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudIdentity.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_iot/mix.exs b/clients/cloud_iot/mix.exs
index 442d0851f2..9efaa2cf53 100644
--- a/clients/cloud_iot/mix.exs
+++ b/clients/cloud_iot/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudIot.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_kms/mix.exs b/clients/cloud_kms/mix.exs
index 31f3ab14a2..44ece89dab 100644
--- a/clients/cloud_kms/mix.exs
+++ b/clients/cloud_kms/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudKMS.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_monitoring/mix.exs b/clients/cloud_monitoring/mix.exs
index c98b2b0446..8f38d7d296 100644
--- a/clients/cloud_monitoring/mix.exs
+++ b/clients/cloud_monitoring/mix.exs
@@ -25,7 +25,7 @@ defmodule GoogleApi.CloudMonitoring.V2BETA2.Mixfile do
     [
       {:tesla, "~> 0.5"},
       {:poison, ">= 1.0.0"},
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_private_catalog/mix.exs b/clients/cloud_private_catalog/mix.exs
index 546734d814..6ba933b90f 100644
--- a/clients/cloud_private_catalog/mix.exs
+++ b/clients/cloud_private_catalog/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudPrivateCatalog.Mixfile do
     [
       {:google_gax, "~> 0.2"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_private_catalog_producer/mix.exs b/clients/cloud_private_catalog_producer/mix.exs
index 5ef0d7ab69..2bd613ebf0 100644
--- a/clients/cloud_private_catalog_producer/mix.exs
+++ b/clients/cloud_private_catalog_producer/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudPrivateCatalogProducer.Mixfile do
     [
       {:google_gax, "~> 0.2"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_profiler/mix.exs b/clients/cloud_profiler/mix.exs
index b9fcbb9585..0599a5750e 100644
--- a/clients/cloud_profiler/mix.exs
+++ b/clients/cloud_profiler/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudProfiler.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_resource_manager/mix.exs b/clients/cloud_resource_manager/mix.exs
index 0add337b38..51eb198c4f 100644
--- a/clients/cloud_resource_manager/mix.exs
+++ b/clients/cloud_resource_manager/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudResourceManager.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_run/mix.exs b/clients/cloud_run/mix.exs
index 5206188db8..6311d06552 100644
--- a/clients/cloud_run/mix.exs
+++ b/clients/cloud_run/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudRun.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_scheduler/mix.exs b/clients/cloud_scheduler/mix.exs
index 53eae865e8..bd7c964720 100644
--- a/clients/cloud_scheduler/mix.exs
+++ b/clients/cloud_scheduler/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudScheduler.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_search/mix.exs b/clients/cloud_search/mix.exs
index c2552ee982..f299b6f99f 100644
--- a/clients/cloud_search/mix.exs
+++ b/clients/cloud_search/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudSearch.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_shell/mix.exs b/clients/cloud_shell/mix.exs
index 1df99557c2..ff4d07ba47 100644
--- a/clients/cloud_shell/mix.exs
+++ b/clients/cloud_shell/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudShell.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_support/mix.exs b/clients/cloud_support/mix.exs
index a94100fc34..ca392ef510 100644
--- a/clients/cloud_support/mix.exs
+++ b/clients/cloud_support/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudSupport.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_tasks/mix.exs b/clients/cloud_tasks/mix.exs
index 52563d6084..ff6b19cc49 100644
--- a/clients/cloud_tasks/mix.exs
+++ b/clients/cloud_tasks/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudTasks.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_trace/mix.exs b/clients/cloud_trace/mix.exs
index bb198c703c..50600e9937 100644
--- a/clients/cloud_trace/mix.exs
+++ b/clients/cloud_trace/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CloudTrace.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/cloud_user_accounts/mix.exs b/clients/cloud_user_accounts/mix.exs
index 07ebb19626..7ab3b639b6 100644
--- a/clients/cloud_user_accounts/mix.exs
+++ b/clients/cloud_user_accounts/mix.exs
@@ -22,7 +22,7 @@ defmodule GoogleApi.CloudUserAccounts.Vm_alpha.Mixfile do
     [
       {:tesla, "~> 0.8"},
       {:poison, ">= 1.0.0"},
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/comment_analyzer/mix.exs b/clients/comment_analyzer/mix.exs
index e8bab11e74..33764a2495 100644
--- a/clients/comment_analyzer/mix.exs
+++ b/clients/comment_analyzer/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CommentAnalyzer.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/composer/mix.exs b/clients/composer/mix.exs
index da7c745e37..a7794b2a9d 100644
--- a/clients/composer/mix.exs
+++ b/clients/composer/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Composer.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/compute/mix.exs b/clients/compute/mix.exs
index ca1669aace..9f6e26910b 100644
--- a/clients/compute/mix.exs
+++ b/clients/compute/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Compute.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/connectors/mix.exs b/clients/connectors/mix.exs
index 6b76f76a2b..f3abe39b71 100644
--- a/clients/connectors/mix.exs
+++ b/clients/connectors/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Connectors.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/consumer_surveys/mix.exs b/clients/consumer_surveys/mix.exs
index 3ee78858d9..aeb38d9138 100644
--- a/clients/consumer_surveys/mix.exs
+++ b/clients/consumer_surveys/mix.exs
@@ -22,7 +22,7 @@ defmodule GoogleApi.ConsumerSurveys.V2.Mixfile do
     [
       {:tesla, "~> 0.8"},
       {:poison, ">= 1.0.0"},
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/contact_center_insights/mix.exs b/clients/contact_center_insights/mix.exs
index 0730de76ae..592da42bdd 100644
--- a/clients/contact_center_insights/mix.exs
+++ b/clients/contact_center_insights/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.ContactCenterInsights.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/container/mix.exs b/clients/container/mix.exs
index 156f7426f6..6e0dde81f1 100644
--- a/clients/container/mix.exs
+++ b/clients/container/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Container.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/container_analysis/mix.exs b/clients/container_analysis/mix.exs
index e853103290..c45a7fa9a1 100644
--- a/clients/container_analysis/mix.exs
+++ b/clients/container_analysis/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.ContainerAnalysis.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/content/mix.exs b/clients/content/mix.exs
index 8e2e6eabd0..9dcbbfebe3 100644
--- a/clients/content/mix.exs
+++ b/clients/content/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Content.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/custom_search/mix.exs b/clients/custom_search/mix.exs
index 8510ba1c54..ea3ef6720c 100644
--- a/clients/custom_search/mix.exs
+++ b/clients/custom_search/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.CustomSearch.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/data_catalog/mix.exs b/clients/data_catalog/mix.exs
index a8622c6cb7..4935a38d49 100644
--- a/clients/data_catalog/mix.exs
+++ b/clients/data_catalog/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.DataCatalog.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/data_fusion/mix.exs b/clients/data_fusion/mix.exs
index 1ca5206703..34d2cea527 100644
--- a/clients/data_fusion/mix.exs
+++ b/clients/data_fusion/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.DataFusion.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/data_labeling/mix.exs b/clients/data_labeling/mix.exs
index a9ce812879..75f12102b5 100644
--- a/clients/data_labeling/mix.exs
+++ b/clients/data_labeling/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.DataLabeling.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/data_migration/mix.exs b/clients/data_migration/mix.exs
index 407e269d4d..a56d4a4b07 100644
--- a/clients/data_migration/mix.exs
+++ b/clients/data_migration/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.DataMigration.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/data_pipelines/mix.exs b/clients/data_pipelines/mix.exs
index 5e36ad6687..51ffe8eee9 100644
--- a/clients/data_pipelines/mix.exs
+++ b/clients/data_pipelines/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.DataPipelines.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/dataflow/mix.exs b/clients/dataflow/mix.exs
index b1629e37ac..81bfd4dcda 100644
--- a/clients/dataflow/mix.exs
+++ b/clients/dataflow/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Dataflow.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/dataproc/mix.exs b/clients/dataproc/mix.exs
index 7555d8a4a5..3f8b6a28fb 100644
--- a/clients/dataproc/mix.exs
+++ b/clients/dataproc/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Dataproc.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/datastore/mix.exs b/clients/datastore/mix.exs
index e0d7392151..9178a38601 100644
--- a/clients/datastore/mix.exs
+++ b/clients/datastore/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Datastore.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/datastream/mix.exs b/clients/datastream/mix.exs
index a083ec5755..9110c75c9b 100644
--- a/clients/datastream/mix.exs
+++ b/clients/datastream/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Datastream.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/deployment_manager/mix.exs b/clients/deployment_manager/mix.exs
index df954407ca..cca1e51a66 100644
--- a/clients/deployment_manager/mix.exs
+++ b/clients/deployment_manager/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.DeploymentManager.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/dfa_reporting/mix.exs b/clients/dfa_reporting/mix.exs
index 8c91b80274..092479fea1 100644
--- a/clients/dfa_reporting/mix.exs
+++ b/clients/dfa_reporting/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.DFAReporting.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/dialogflow/mix.exs b/clients/dialogflow/mix.exs
index 12693d64b8..f60b1e83a5 100644
--- a/clients/dialogflow/mix.exs
+++ b/clients/dialogflow/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Dialogflow.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/digital_asset_links/mix.exs b/clients/digital_asset_links/mix.exs
index 1aa6c779ea..d49d019a73 100644
--- a/clients/digital_asset_links/mix.exs
+++ b/clients/digital_asset_links/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.DigitalAssetLinks.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/discovery/mix.exs b/clients/discovery/mix.exs
index fd8de2ba6f..2a3f82f90d 100644
--- a/clients/discovery/mix.exs
+++ b/clients/discovery/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Discovery.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/display_video/mix.exs b/clients/display_video/mix.exs
index 829b5477d4..d20164503d 100644
--- a/clients/display_video/mix.exs
+++ b/clients/display_video/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.DisplayVideo.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/dlp/mix.exs b/clients/dlp/mix.exs
index 7f837be999..ce5983035e 100644
--- a/clients/dlp/mix.exs
+++ b/clients/dlp/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.DLP.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/dns/mix.exs b/clients/dns/mix.exs
index 7e202cd557..eb7fc82879 100644
--- a/clients/dns/mix.exs
+++ b/clients/dns/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.DNS.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/docs/mix.exs b/clients/docs/mix.exs
index 21fcc6fbbc..44b34ed3f4 100644
--- a/clients/docs/mix.exs
+++ b/clients/docs/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Docs.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/document_ai/mix.exs b/clients/document_ai/mix.exs
index ba18469730..faaddab963 100644
--- a/clients/document_ai/mix.exs
+++ b/clients/document_ai/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.DocumentAI.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/domains/mix.exs b/clients/domains/mix.exs
index de86d6e727..b7e844e5dd 100644
--- a/clients/domains/mix.exs
+++ b/clients/domains/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Domains.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/domains_rdap/mix.exs b/clients/domains_rdap/mix.exs
index 623cf69720..408fbdebe1 100644
--- a/clients/domains_rdap/mix.exs
+++ b/clients/domains_rdap/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.DomainsRDAP.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/double_click_bid_manager/mix.exs b/clients/double_click_bid_manager/mix.exs
index eb34230d59..756f6e3e0d 100644
--- a/clients/double_click_bid_manager/mix.exs
+++ b/clients/double_click_bid_manager/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.DoubleClickBidManager.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/double_click_search/mix.exs b/clients/double_click_search/mix.exs
index 94620d83b2..8a8a04a85c 100644
--- a/clients/double_click_search/mix.exs
+++ b/clients/double_click_search/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.DoubleClickSearch.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/drive/mix.exs b/clients/drive/mix.exs
index 7f9bc4af13..61b9a1ca11 100644
--- a/clients/drive/mix.exs
+++ b/clients/drive/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Drive.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/drive_activity/mix.exs b/clients/drive_activity/mix.exs
index 50eb0089a0..a2cf4e2a88 100644
--- a/clients/drive_activity/mix.exs
+++ b/clients/drive_activity/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.DriveActivity.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/essential_contacts/mix.exs b/clients/essential_contacts/mix.exs
index 48fd3cf596..50c0dd0942 100644
--- a/clients/essential_contacts/mix.exs
+++ b/clients/essential_contacts/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.EssentialContacts.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/eventarc/mix.exs b/clients/eventarc/mix.exs
index e54c6ea213..73d5215114 100644
--- a/clients/eventarc/mix.exs
+++ b/clients/eventarc/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Eventarc.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/fact_check_tools/mix.exs b/clients/fact_check_tools/mix.exs
index 910039fc8d..eee015f3d4 100644
--- a/clients/fact_check_tools/mix.exs
+++ b/clients/fact_check_tools/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.FactCheckTools.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/fcm/mix.exs b/clients/fcm/mix.exs
index 0e98cf865b..b01f60f007 100644
--- a/clients/fcm/mix.exs
+++ b/clients/fcm/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.FCM.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/fcm_data/mix.exs b/clients/fcm_data/mix.exs
index 70ee2f9cf1..1d42c57784 100644
--- a/clients/fcm_data/mix.exs
+++ b/clients/fcm_data/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.FCMData.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/file/mix.exs b/clients/file/mix.exs
index acbd5bbfe6..9622452a10 100644
--- a/clients/file/mix.exs
+++ b/clients/file/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.File.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/firebase/mix.exs b/clients/firebase/mix.exs
index 4611552d2c..a84edf7805 100644
--- a/clients/firebase/mix.exs
+++ b/clients/firebase/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Firebase.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/firebase_app_check/mix.exs b/clients/firebase_app_check/mix.exs
index 268c444d7d..177ca2d413 100644
--- a/clients/firebase_app_check/mix.exs
+++ b/clients/firebase_app_check/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.FirebaseAppCheck.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/firebase_database/mix.exs b/clients/firebase_database/mix.exs
index 5ca21b5773..66d52f1571 100644
--- a/clients/firebase_database/mix.exs
+++ b/clients/firebase_database/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.FirebaseDatabase.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/firebase_dynamic_links/mix.exs b/clients/firebase_dynamic_links/mix.exs
index af453c8358..713d40ac26 100644
--- a/clients/firebase_dynamic_links/mix.exs
+++ b/clients/firebase_dynamic_links/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.FirebaseDynamicLinks.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/firebase_hosting/mix.exs b/clients/firebase_hosting/mix.exs
index 3f70ea5b25..2bb59ce4ad 100644
--- a/clients/firebase_hosting/mix.exs
+++ b/clients/firebase_hosting/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.FirebaseHosting.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/firebase_ml/mix.exs b/clients/firebase_ml/mix.exs
index 9977f76d43..e481e7c25c 100644
--- a/clients/firebase_ml/mix.exs
+++ b/clients/firebase_ml/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.FirebaseML.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/firebase_rules/mix.exs b/clients/firebase_rules/mix.exs
index 0d0e57c2df..a76518a529 100644
--- a/clients/firebase_rules/mix.exs
+++ b/clients/firebase_rules/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.FirebaseRules.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/firebase_storage/mix.exs b/clients/firebase_storage/mix.exs
index 6af54e772a..f54f939a2f 100644
--- a/clients/firebase_storage/mix.exs
+++ b/clients/firebase_storage/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.FirebaseStorage.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/firestore/mix.exs b/clients/firestore/mix.exs
index ce76e6447b..79597e5c0d 100644
--- a/clients/firestore/mix.exs
+++ b/clients/firestore/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Firestore.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/fitness/mix.exs b/clients/fitness/mix.exs
index 8bee9a1725..67052cfec1 100644
--- a/clients/fitness/mix.exs
+++ b/clients/fitness/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Fitness.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/fonts/mix.exs b/clients/fonts/mix.exs
index 6b4dafd9af..ae4ec32ea4 100644
--- a/clients/fonts/mix.exs
+++ b/clients/fonts/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Fonts.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/fusion_tables/mix.exs b/clients/fusion_tables/mix.exs
index 455d8a7222..de64e8cb82 100644
--- a/clients/fusion_tables/mix.exs
+++ b/clients/fusion_tables/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.FusionTables.Mixfile do
     [
       {:google_gax, "~> 0.2"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/game_services/mix.exs b/clients/game_services/mix.exs
index 9cadede3cc..98646d3daa 100644
--- a/clients/game_services/mix.exs
+++ b/clients/game_services/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.GameServices.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/games/mix.exs b/clients/games/mix.exs
index c1b62a78fb..1c9a267a04 100644
--- a/clients/games/mix.exs
+++ b/clients/games/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Games.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/games_configuration/mix.exs b/clients/games_configuration/mix.exs
index 4f736b3e9b..e8af77b228 100644
--- a/clients/games_configuration/mix.exs
+++ b/clients/games_configuration/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.GamesConfiguration.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/games_management/mix.exs b/clients/games_management/mix.exs
index 32e6841f7d..3a145ea03c 100644
--- a/clients/games_management/mix.exs
+++ b/clients/games_management/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.GamesManagement.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/gax/mix.exs b/clients/gax/mix.exs
index b654b6cc49..bcde5aafb4 100644
--- a/clients/gax/mix.exs
+++ b/clients/gax/mix.exs
@@ -29,7 +29,7 @@ defmodule GoogleApi.Gax.MixProject do
       {:tesla, "~> 1.2"},
       {:mime, "~> 1.0"},
       {:poison, ">= 3.0.0 and < 5.0.0"},
-      {:ex_doc, "~> 0.16", only: :dev},
+      {:ex_doc, "~> 0.28", only: :dev},
       {:dialyxir, "~> 0.5", only: [:dev], runtime: false}
     ]
   end
diff --git a/clients/genomics/mix.exs b/clients/genomics/mix.exs
index 2931520c52..90fbe28501 100644
--- a/clients/genomics/mix.exs
+++ b/clients/genomics/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Genomics.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/gke_hub/mix.exs b/clients/gke_hub/mix.exs
index 30ebabebd2..3e7a136b36 100644
--- a/clients/gke_hub/mix.exs
+++ b/clients/gke_hub/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.GKEHub.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/gmail/mix.exs b/clients/gmail/mix.exs
index 9b03440829..577019b935 100644
--- a/clients/gmail/mix.exs
+++ b/clients/gmail/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Gmail.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/gmail_postmaster_tools/mix.exs b/clients/gmail_postmaster_tools/mix.exs
index b52e99b6c5..0a28222c05 100644
--- a/clients/gmail_postmaster_tools/mix.exs
+++ b/clients/gmail_postmaster_tools/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.GmailPostmasterTools.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/groups_migration/mix.exs b/clients/groups_migration/mix.exs
index d0d35358bf..b936ac07b0 100644
--- a/clients/groups_migration/mix.exs
+++ b/clients/groups_migration/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.GroupsMigration.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/groups_settings/mix.exs b/clients/groups_settings/mix.exs
index a28923415c..f357e7a1f6 100644
--- a/clients/groups_settings/mix.exs
+++ b/clients/groups_settings/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.GroupsSettings.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/health_care/mix.exs b/clients/health_care/mix.exs
index 964d49cce4..5cb481695f 100644
--- a/clients/health_care/mix.exs
+++ b/clients/health_care/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.HealthCare.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/home_graph/mix.exs b/clients/home_graph/mix.exs
index 9900e09de8..f225865cb5 100644
--- a/clients/home_graph/mix.exs
+++ b/clients/home_graph/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.HomeGraph.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/iam/mix.exs b/clients/iam/mix.exs
index 54a620535c..494caae67d 100644
--- a/clients/iam/mix.exs
+++ b/clients/iam/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.IAM.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/iam_credentials/mix.exs b/clients/iam_credentials/mix.exs
index a256cfc0e8..afb662368c 100644
--- a/clients/iam_credentials/mix.exs
+++ b/clients/iam_credentials/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.IAMCredentials.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/iap/mix.exs b/clients/iap/mix.exs
index e733adffbe..5a2014fe61 100644
--- a/clients/iap/mix.exs
+++ b/clients/iap/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.IAP.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/idea_hub/mix.exs b/clients/idea_hub/mix.exs
index 35bbe5ad56..ed8ba56927 100644
--- a/clients/idea_hub/mix.exs
+++ b/clients/idea_hub/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.IdeaHub.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/identity_toolkit/mix.exs b/clients/identity_toolkit/mix.exs
index 07b8c390ab..cad0fab0ae 100644
--- a/clients/identity_toolkit/mix.exs
+++ b/clients/identity_toolkit/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.IdentityToolkit.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/ids/mix.exs b/clients/ids/mix.exs
index 5f0407898b..7781bed5e3 100644
--- a/clients/ids/mix.exs
+++ b/clients/ids/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.IDS.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/indexing/mix.exs b/clients/indexing/mix.exs
index 4282a489f0..242513b12f 100644
--- a/clients/indexing/mix.exs
+++ b/clients/indexing/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Indexing.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/jobs/mix.exs b/clients/jobs/mix.exs
index ae2c0d5394..198385035b 100644
--- a/clients/jobs/mix.exs
+++ b/clients/jobs/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Jobs.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/keep/mix.exs b/clients/keep/mix.exs
index d280af3789..3a8eefcc3a 100644
--- a/clients/keep/mix.exs
+++ b/clients/keep/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Keep.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/knowledge_graph_search/mix.exs b/clients/knowledge_graph_search/mix.exs
index 775d7e3411..16f4725c56 100644
--- a/clients/knowledge_graph_search/mix.exs
+++ b/clients/knowledge_graph_search/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.KnowledgeGraphSearch.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/language/mix.exs b/clients/language/mix.exs
index b7346aabc0..15ff17e6be 100644
--- a/clients/language/mix.exs
+++ b/clients/language/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Language.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/library_agent/mix.exs b/clients/library_agent/mix.exs
index 227e1bbba8..7d2c84b1d7 100644
--- a/clients/library_agent/mix.exs
+++ b/clients/library_agent/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.LibraryAgent.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/licensing/mix.exs b/clients/licensing/mix.exs
index 50f833ba3a..de62f1ddfe 100644
--- a/clients/licensing/mix.exs
+++ b/clients/licensing/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Licensing.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/life_sciences/mix.exs b/clients/life_sciences/mix.exs
index 1603963f49..8b6c45e4b1 100644
--- a/clients/life_sciences/mix.exs
+++ b/clients/life_sciences/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.LifeSciences.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/local_services/mix.exs b/clients/local_services/mix.exs
index 15615a6a7b..2594dd7748 100644
--- a/clients/local_services/mix.exs
+++ b/clients/local_services/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.LocalServices.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/logging/mix.exs b/clients/logging/mix.exs
index 2f1ca86675..a03be8cae7 100644
--- a/clients/logging/mix.exs
+++ b/clients/logging/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Logging.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/machine_learning/mix.exs b/clients/machine_learning/mix.exs
index 4f1462088c..76b54a7e13 100644
--- a/clients/machine_learning/mix.exs
+++ b/clients/machine_learning/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.MachineLearning.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/managed_identities/mix.exs b/clients/managed_identities/mix.exs
index 1d7d5e8654..edafa4dbb3 100644
--- a/clients/managed_identities/mix.exs
+++ b/clients/managed_identities/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.ManagedIdentities.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/manufacturers/mix.exs b/clients/manufacturers/mix.exs
index 6a68ab624d..38f6034762 100644
--- a/clients/manufacturers/mix.exs
+++ b/clients/manufacturers/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Manufacturers.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/memcache/mix.exs b/clients/memcache/mix.exs
index fbad0e5219..eeb373fe58 100644
--- a/clients/memcache/mix.exs
+++ b/clients/memcache/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Memcache.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/metastore/mix.exs b/clients/metastore/mix.exs
index c22d17dd60..87658c7eac 100644
--- a/clients/metastore/mix.exs
+++ b/clients/metastore/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Metastore.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/mirror/mix.exs b/clients/mirror/mix.exs
index 561143d740..7d2d51d840 100644
--- a/clients/mirror/mix.exs
+++ b/clients/mirror/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Mirror.Mixfile do
     [
       {:google_gax, "~> 0.2"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/monitoring/mix.exs b/clients/monitoring/mix.exs
index 7b404607ce..b00d8ecc6d 100644
--- a/clients/monitoring/mix.exs
+++ b/clients/monitoring/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Monitoring.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/my_business_account_management/mix.exs b/clients/my_business_account_management/mix.exs
index bee075d0bd..96810bcbfa 100644
--- a/clients/my_business_account_management/mix.exs
+++ b/clients/my_business_account_management/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.MyBusinessAccountManagement.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/my_business_business_information/mix.exs b/clients/my_business_business_information/mix.exs
index e027a2d37e..582956cbb9 100644
--- a/clients/my_business_business_information/mix.exs
+++ b/clients/my_business_business_information/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.MyBusinessBusinessInformation.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/my_business_lodging/mix.exs b/clients/my_business_lodging/mix.exs
index 7ec4a7bacc..75c8b7e046 100644
--- a/clients/my_business_lodging/mix.exs
+++ b/clients/my_business_lodging/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.MyBusinessLodging.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/my_business_notifications/mix.exs b/clients/my_business_notifications/mix.exs
index 8aafb789c6..727c752703 100644
--- a/clients/my_business_notifications/mix.exs
+++ b/clients/my_business_notifications/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.MyBusinessNotifications.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/my_business_place_actions/mix.exs b/clients/my_business_place_actions/mix.exs
index dbe481fffc..be68847189 100644
--- a/clients/my_business_place_actions/mix.exs
+++ b/clients/my_business_place_actions/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.MyBusinessPlaceActions.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/my_business_verifications/mix.exs b/clients/my_business_verifications/mix.exs
index 31a0035dc5..d6a8b9ea1c 100644
--- a/clients/my_business_verifications/mix.exs
+++ b/clients/my_business_verifications/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.MyBusinessVerifications.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/network_connectivity/mix.exs b/clients/network_connectivity/mix.exs
index 0f3c27d727..d0b548ad32 100644
--- a/clients/network_connectivity/mix.exs
+++ b/clients/network_connectivity/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.NetworkConnectivity.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/network_management/mix.exs b/clients/network_management/mix.exs
index d7b018dcf1..3af79a48c6 100644
--- a/clients/network_management/mix.exs
+++ b/clients/network_management/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.NetworkManagement.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/network_security/mix.exs b/clients/network_security/mix.exs
index 9c594a301e..dbead116ec 100644
--- a/clients/network_security/mix.exs
+++ b/clients/network_security/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.NetworkSecurity.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/network_services/mix.exs b/clients/network_services/mix.exs
index 1dfacfb850..810bfdd28d 100644
--- a/clients/network_services/mix.exs
+++ b/clients/network_services/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.NetworkServices.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/notebooks/mix.exs b/clients/notebooks/mix.exs
index 5582b32d44..b174313648 100644
--- a/clients/notebooks/mix.exs
+++ b/clients/notebooks/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Notebooks.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/o_auth2/mix.exs b/clients/o_auth2/mix.exs
index 76aa40274d..bb47b5a00a 100644
--- a/clients/o_auth2/mix.exs
+++ b/clients/o_auth2/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.OAuth2.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/on_demand_scanning/mix.exs b/clients/on_demand_scanning/mix.exs
index d704600610..9f8a0416a6 100644
--- a/clients/on_demand_scanning/mix.exs
+++ b/clients/on_demand_scanning/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.OnDemandScanning.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/org_policy/mix.exs b/clients/org_policy/mix.exs
index dbed3357e7..440bf6f6c6 100644
--- a/clients/org_policy/mix.exs
+++ b/clients/org_policy/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.OrgPolicy.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/os_config/mix.exs b/clients/os_config/mix.exs
index a31961f796..eaf15b5487 100644
--- a/clients/os_config/mix.exs
+++ b/clients/os_config/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.OSConfig.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/os_login/mix.exs b/clients/os_login/mix.exs
index 93ff9d9e3c..4f86f417ad 100644
--- a/clients/os_login/mix.exs
+++ b/clients/os_login/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.OSLogin.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/page_speed_online/mix.exs b/clients/page_speed_online/mix.exs
index e314e97b6d..205fbedac3 100644
--- a/clients/page_speed_online/mix.exs
+++ b/clients/page_speed_online/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.PageSpeedOnline.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/partners/mix.exs b/clients/partners/mix.exs
index 582c265a1c..377138bc53 100644
--- a/clients/partners/mix.exs
+++ b/clients/partners/mix.exs
@@ -23,7 +23,7 @@ defmodule GoogleApi.Partners.V2.Mixfile do
   defp deps() do
     [
       {:google_gax, "~> 0.1.0"},
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/payments_reseller_subscription/mix.exs b/clients/payments_reseller_subscription/mix.exs
index 3c1b2885ff..3b7723eb8d 100644
--- a/clients/payments_reseller_subscription/mix.exs
+++ b/clients/payments_reseller_subscription/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.PaymentsResellerSubscription.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/people/mix.exs b/clients/people/mix.exs
index 80146084a7..db43442db4 100644
--- a/clients/people/mix.exs
+++ b/clients/people/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.People.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/play_custom_app/mix.exs b/clients/play_custom_app/mix.exs
index 58ee05165e..e351d1431b 100644
--- a/clients/play_custom_app/mix.exs
+++ b/clients/play_custom_app/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.PlayCustomApp.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/play_movies_partner/mix.exs b/clients/play_movies_partner/mix.exs
index e310c2d50f..68bc110c55 100644
--- a/clients/play_movies_partner/mix.exs
+++ b/clients/play_movies_partner/mix.exs
@@ -22,7 +22,7 @@ defmodule GoogleApi.PlayMoviesPartner.V1.Mixfile do
     [
       {:tesla, "~> 0.8"},
       {:poison, ">= 1.0.0"},
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/playable_locations/mix.exs b/clients/playable_locations/mix.exs
index ad361f2e23..b8dd64b247 100644
--- a/clients/playable_locations/mix.exs
+++ b/clients/playable_locations/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.PlayableLocations.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/plus/mix.exs b/clients/plus/mix.exs
index ae0f48e70b..cad4e7f377 100644
--- a/clients/plus/mix.exs
+++ b/clients/plus/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Plus.Mixfile do
     [
       {:google_gax, "~> 0.2"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/plus_domains/mix.exs b/clients/plus_domains/mix.exs
index 1f09a532ae..57c93e1019 100644
--- a/clients/plus_domains/mix.exs
+++ b/clients/plus_domains/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.PlusDomains.Mixfile do
     [
       {:google_gax, "~> 0.2"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/policy_analyzer/mix.exs b/clients/policy_analyzer/mix.exs
index 622541f773..dbe65a0293 100644
--- a/clients/policy_analyzer/mix.exs
+++ b/clients/policy_analyzer/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.PolicyAnalyzer.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/policy_simulator/mix.exs b/clients/policy_simulator/mix.exs
index f4987ec144..efa7049165 100644
--- a/clients/policy_simulator/mix.exs
+++ b/clients/policy_simulator/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.PolicySimulator.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/policy_troubleshooter/mix.exs b/clients/policy_troubleshooter/mix.exs
index 4c4419b83b..7526f2ceed 100644
--- a/clients/policy_troubleshooter/mix.exs
+++ b/clients/policy_troubleshooter/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.PolicyTroubleshooter.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/poly/mix.exs b/clients/poly/mix.exs
index 497d17af5d..125c12dc2d 100644
--- a/clients/poly/mix.exs
+++ b/clients/poly/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Poly.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/prediction/mix.exs b/clients/prediction/mix.exs
index cf2c804dda..3ce9100efc 100644
--- a/clients/prediction/mix.exs
+++ b/clients/prediction/mix.exs
@@ -22,7 +22,7 @@ defmodule GoogleApi.Prediction.V16.Mixfile do
     [
       {:tesla, "~> 0.8"},
       {:poison, ">= 1.0.0"},
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/private_ca/mix.exs b/clients/private_ca/mix.exs
index 76783be978..320f11ac87 100644
--- a/clients/private_ca/mix.exs
+++ b/clients/private_ca/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.PrivateCA.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/proximity_beacon/mix.exs b/clients/proximity_beacon/mix.exs
index b9486f1543..04617112ec 100644
--- a/clients/proximity_beacon/mix.exs
+++ b/clients/proximity_beacon/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.ProximityBeacon.Mixfile do
     [
       {:google_gax, "~> 0.2"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/pub_sub/mix.exs b/clients/pub_sub/mix.exs
index 4a76b43745..3ad04fc27d 100644
--- a/clients/pub_sub/mix.exs
+++ b/clients/pub_sub/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.PubSub.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/pub_sub_lite/mix.exs b/clients/pub_sub_lite/mix.exs
index 3fe4807aaa..a20a9356be 100644
--- a/clients/pub_sub_lite/mix.exs
+++ b/clients/pub_sub_lite/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.PubSubLite.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/qpx_express/mix.exs b/clients/qpx_express/mix.exs
index e1a6d0d262..f2765588d8 100644
--- a/clients/qpx_express/mix.exs
+++ b/clients/qpx_express/mix.exs
@@ -22,7 +22,7 @@ defmodule GoogleApi.QPXExpress.V1.Mixfile do
     [
       {:tesla, "~> 0.8"},
       {:poison, ">= 1.0.0"},
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/real_time_bidding/mix.exs b/clients/real_time_bidding/mix.exs
index c1e9ecd0a1..6a4dff0581 100644
--- a/clients/real_time_bidding/mix.exs
+++ b/clients/real_time_bidding/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.RealTimeBidding.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/recaptcha_enterprise/mix.exs b/clients/recaptcha_enterprise/mix.exs
index 397a0e67b9..643db2287b 100644
--- a/clients/recaptcha_enterprise/mix.exs
+++ b/clients/recaptcha_enterprise/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.RecaptchaEnterprise.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/recommendation_engine/mix.exs b/clients/recommendation_engine/mix.exs
index 91991e4a0a..3e1136d749 100644
--- a/clients/recommendation_engine/mix.exs
+++ b/clients/recommendation_engine/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.RecommendationEngine.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/recommender/mix.exs b/clients/recommender/mix.exs
index 5ab5126dde..050a8e3bde 100644
--- a/clients/recommender/mix.exs
+++ b/clients/recommender/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Recommender.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/redis/mix.exs b/clients/redis/mix.exs
index ab91720396..4ad4d12b5a 100644
--- a/clients/redis/mix.exs
+++ b/clients/redis/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Redis.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/remote_build_execution/mix.exs b/clients/remote_build_execution/mix.exs
index 4e5cb11071..a63f961b5a 100644
--- a/clients/remote_build_execution/mix.exs
+++ b/clients/remote_build_execution/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.RemoteBuildExecution.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/replica_pool/mix.exs b/clients/replica_pool/mix.exs
index 6d29ba10ef..7409c5ce38 100644
--- a/clients/replica_pool/mix.exs
+++ b/clients/replica_pool/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.ReplicaPool.Mixfile do
     [
       {:google_gax, "~> 0.2"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/replica_pool_updater/mix.exs b/clients/replica_pool_updater/mix.exs
index aba155bde1..e6f051bc43 100644
--- a/clients/replica_pool_updater/mix.exs
+++ b/clients/replica_pool_updater/mix.exs
@@ -22,7 +22,7 @@ defmodule GoogleApi.ReplicaPoolUpdater.V1beta1.Mixfile do
     [
       {:tesla, "~> 0.8"},
       {:poison, ">= 1.0.0"},
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/reseller/mix.exs b/clients/reseller/mix.exs
index c456867037..62f1ff49f2 100644
--- a/clients/reseller/mix.exs
+++ b/clients/reseller/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Reseller.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/resource_settings/mix.exs b/clients/resource_settings/mix.exs
index 15a3359567..bfe92f74e8 100644
--- a/clients/resource_settings/mix.exs
+++ b/clients/resource_settings/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.ResourceSettings.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/resource_views/mix.exs b/clients/resource_views/mix.exs
index fd09c27819..9679c2d65e 100644
--- a/clients/resource_views/mix.exs
+++ b/clients/resource_views/mix.exs
@@ -22,7 +22,7 @@ defmodule GoogleApi.ResourceViews.V1beta2.Mixfile do
     [
       {:tesla, "~> 0.8"},
       {:poison, ">= 1.0.0"},
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/retail/mix.exs b/clients/retail/mix.exs
index 0df3754a88..0e9b513543 100644
--- a/clients/retail/mix.exs
+++ b/clients/retail/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Retail.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/run/mix.exs b/clients/run/mix.exs
index 9b129f9ba7..d53c8eab56 100644
--- a/clients/run/mix.exs
+++ b/clients/run/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Run.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/runtime_config/mix.exs b/clients/runtime_config/mix.exs
index 0351faf195..25739368b3 100644
--- a/clients/runtime_config/mix.exs
+++ b/clients/runtime_config/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.RuntimeConfig.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/safe_browsing/mix.exs b/clients/safe_browsing/mix.exs
index 9966a3944b..6854d5c491 100644
--- a/clients/safe_browsing/mix.exs
+++ b/clients/safe_browsing/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.SafeBrowsing.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/sas_portal/mix.exs b/clients/sas_portal/mix.exs
index b5e45cc9d4..65c35b17d8 100644
--- a/clients/sas_portal/mix.exs
+++ b/clients/sas_portal/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.SASPortal.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/script/mix.exs b/clients/script/mix.exs
index 877cd81f3b..4d501e7bf0 100644
--- a/clients/script/mix.exs
+++ b/clients/script/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Script.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/search_console/mix.exs b/clients/search_console/mix.exs
index 2f77415ae6..b3370462ff 100644
--- a/clients/search_console/mix.exs
+++ b/clients/search_console/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.SearchConsole.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/secret_manager/mix.exs b/clients/secret_manager/mix.exs
index e64d50b21d..baa249cd66 100644
--- a/clients/secret_manager/mix.exs
+++ b/clients/secret_manager/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.SecretManager.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/security_center/mix.exs b/clients/security_center/mix.exs
index 307648f123..aaf8501d0d 100644
--- a/clients/security_center/mix.exs
+++ b/clients/security_center/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.SecurityCenter.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/service_broker/mix.exs b/clients/service_broker/mix.exs
index ca081b38e3..85529ef1de 100644
--- a/clients/service_broker/mix.exs
+++ b/clients/service_broker/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.ServiceBroker.Mixfile do
     [
       {:google_gax, "~> 0.2"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/service_consumer_management/mix.exs b/clients/service_consumer_management/mix.exs
index 8b51010d01..e2911df8b4 100644
--- a/clients/service_consumer_management/mix.exs
+++ b/clients/service_consumer_management/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.ServiceConsumerManagement.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/service_control/mix.exs b/clients/service_control/mix.exs
index c257c08f7e..49c8239cdb 100644
--- a/clients/service_control/mix.exs
+++ b/clients/service_control/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.ServiceControl.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/service_directory/mix.exs b/clients/service_directory/mix.exs
index 2f4437f534..2a6ba16456 100644
--- a/clients/service_directory/mix.exs
+++ b/clients/service_directory/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.ServiceDirectory.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/service_management/mix.exs b/clients/service_management/mix.exs
index 8f3f5c3725..bdf06278c3 100644
--- a/clients/service_management/mix.exs
+++ b/clients/service_management/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.ServiceManagement.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/service_networking/mix.exs b/clients/service_networking/mix.exs
index f3ab909194..758d6bd058 100644
--- a/clients/service_networking/mix.exs
+++ b/clients/service_networking/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.ServiceNetworking.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/service_usage/mix.exs b/clients/service_usage/mix.exs
index b750cedff4..4bd1e70ab7 100644
--- a/clients/service_usage/mix.exs
+++ b/clients/service_usage/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.ServiceUsage.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/service_user/mix.exs b/clients/service_user/mix.exs
index d17301d9f2..cfc06da15d 100644
--- a/clients/service_user/mix.exs
+++ b/clients/service_user/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.ServiceUser.Mixfile do
     [
       {:google_gax, "~> 0.2"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/sheets/mix.exs b/clients/sheets/mix.exs
index 27ba333fe1..d29cfdf0fc 100644
--- a/clients/sheets/mix.exs
+++ b/clients/sheets/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Sheets.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/site_verification/mix.exs b/clients/site_verification/mix.exs
index 145ed17280..2b4a2141af 100644
--- a/clients/site_verification/mix.exs
+++ b/clients/site_verification/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.SiteVerification.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/slides/mix.exs b/clients/slides/mix.exs
index 27c4c47094..f32d01edeb 100644
--- a/clients/slides/mix.exs
+++ b/clients/slides/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Slides.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/smart_device_management/mix.exs b/clients/smart_device_management/mix.exs
index dcd9acd8b6..1da115aa9a 100644
--- a/clients/smart_device_management/mix.exs
+++ b/clients/smart_device_management/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.SmartDeviceManagement.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/source_repo/mix.exs b/clients/source_repo/mix.exs
index 2918f01d18..780b19365b 100644
--- a/clients/source_repo/mix.exs
+++ b/clients/source_repo/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.SourceRepo.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/spanner/mix.exs b/clients/spanner/mix.exs
index e58e97601f..bbd63527a5 100644
--- a/clients/spanner/mix.exs
+++ b/clients/spanner/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Spanner.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/spectrum/mix.exs b/clients/spectrum/mix.exs
index b5772843c5..43cf3d320e 100644
--- a/clients/spectrum/mix.exs
+++ b/clients/spectrum/mix.exs
@@ -23,7 +23,7 @@ defmodule GoogleApi.Spectrum.V1explorer.Mixfile do
   defp deps() do
     [
       {:google_gax, "~> 0.1.0"},
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/speech/mix.exs b/clients/speech/mix.exs
index 1e62647ca1..55bf23aebe 100644
--- a/clients/speech/mix.exs
+++ b/clients/speech/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Speech.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/sql_admin/mix.exs b/clients/sql_admin/mix.exs
index 86860aeb71..07b7417eae 100644
--- a/clients/sql_admin/mix.exs
+++ b/clients/sql_admin/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.SQLAdmin.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/storage/mix.exs b/clients/storage/mix.exs
index 2ebd8c0c61..556f1afe29 100644
--- a/clients/storage/mix.exs
+++ b/clients/storage/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Storage.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/storage_transfer/mix.exs b/clients/storage_transfer/mix.exs
index 76d4f3c5ad..7b88cd1419 100644
--- a/clients/storage_transfer/mix.exs
+++ b/clients/storage_transfer/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.StorageTransfer.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/street_view_publish/mix.exs b/clients/street_view_publish/mix.exs
index 52bbdd6a96..02efa06b94 100644
--- a/clients/street_view_publish/mix.exs
+++ b/clients/street_view_publish/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.StreetViewPublish.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/sts/mix.exs b/clients/sts/mix.exs
index cb1e6a497f..74c3e4917b 100644
--- a/clients/sts/mix.exs
+++ b/clients/sts/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.STS.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/surveys/mix.exs b/clients/surveys/mix.exs
index eaf196530a..ba01bf7731 100644
--- a/clients/surveys/mix.exs
+++ b/clients/surveys/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Surveys.Mixfile do
     [
       {:google_gax, "~> 0.2"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/tag_manager/mix.exs b/clients/tag_manager/mix.exs
index e55427913b..64b839e446 100644
--- a/clients/tag_manager/mix.exs
+++ b/clients/tag_manager/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.TagManager.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/task_queue/mix.exs b/clients/task_queue/mix.exs
index b48229cd85..d27ec78ea0 100644
--- a/clients/task_queue/mix.exs
+++ b/clients/task_queue/mix.exs
@@ -22,7 +22,7 @@ defmodule GoogleApi.TaskQueue.V1beta2.Mixfile do
     [
       {:tesla, "~> 0.8"},
       {:poison, ">= 1.0.0"},
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/tasks/mix.exs b/clients/tasks/mix.exs
index 1ca2d10bc1..0a3a38eb4b 100644
--- a/clients/tasks/mix.exs
+++ b/clients/tasks/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Tasks.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/test_client/mix.exs b/clients/test_client/mix.exs
index 2e0646b26b..d3d0aecb48 100644
--- a/clients/test_client/mix.exs
+++ b/clients/test_client/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.TestClient.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/testing/mix.exs b/clients/testing/mix.exs
index daecd9e8ac..a7606028a5 100644
--- a/clients/testing/mix.exs
+++ b/clients/testing/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Testing.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/text_to_speech/mix.exs b/clients/text_to_speech/mix.exs
index 27463d2b4c..0973a11225 100644
--- a/clients/text_to_speech/mix.exs
+++ b/clients/text_to_speech/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.TextToSpeech.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/tool_results/mix.exs b/clients/tool_results/mix.exs
index 26805d49f8..67bf47e57a 100644
--- a/clients/tool_results/mix.exs
+++ b/clients/tool_results/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.ToolResults.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/tpu/mix.exs b/clients/tpu/mix.exs
index 4d84103a86..4a0a33b293 100644
--- a/clients/tpu/mix.exs
+++ b/clients/tpu/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.TPU.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/transcoder/mix.exs b/clients/transcoder/mix.exs
index c4f553dcda..8221277f14 100644
--- a/clients/transcoder/mix.exs
+++ b/clients/transcoder/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Transcoder.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/translate/mix.exs b/clients/translate/mix.exs
index 3121019dfc..7047414169 100644
--- a/clients/translate/mix.exs
+++ b/clients/translate/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Translate.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/url_shortener/mix.exs b/clients/url_shortener/mix.exs
index 6d1e3c529c..2635fbd9eb 100644
--- a/clients/url_shortener/mix.exs
+++ b/clients/url_shortener/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.UrlShortener.Mixfile do
     [
       {:google_gax, "~> 0.2"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/vault/mix.exs b/clients/vault/mix.exs
index 3d936b7e2a..f9d6ad07ee 100644
--- a/clients/vault/mix.exs
+++ b/clients/vault/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Vault.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/vector_tile/mix.exs b/clients/vector_tile/mix.exs
index 5e779523dd..b688a549f0 100644
--- a/clients/vector_tile/mix.exs
+++ b/clients/vector_tile/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.VectorTile.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/verified_access/mix.exs b/clients/verified_access/mix.exs
index 9ff98f74d9..709a56dd6b 100644
--- a/clients/verified_access/mix.exs
+++ b/clients/verified_access/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.VerifiedAccess.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/version_history/mix.exs b/clients/version_history/mix.exs
index 98ea1de36e..dae8422f92 100644
--- a/clients/version_history/mix.exs
+++ b/clients/version_history/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.VersionHistory.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/video_intelligence/mix.exs b/clients/video_intelligence/mix.exs
index 599c682e29..1489fbe6a9 100644
--- a/clients/video_intelligence/mix.exs
+++ b/clients/video_intelligence/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.VideoIntelligence.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/vision/mix.exs b/clients/vision/mix.exs
index 990d85e7de..3ec220e8a3 100644
--- a/clients/vision/mix.exs
+++ b/clients/vision/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Vision.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/vm_migration/mix.exs b/clients/vm_migration/mix.exs
index 6b24320947..4aa5031b3a 100644
--- a/clients/vm_migration/mix.exs
+++ b/clients/vm_migration/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.VMMigration.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/web_fonts/mix.exs b/clients/web_fonts/mix.exs
index 43e1635fa3..474350fe88 100644
--- a/clients/web_fonts/mix.exs
+++ b/clients/web_fonts/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.WebFonts.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/web_risk/mix.exs b/clients/web_risk/mix.exs
index 3ba8075db3..c9eb0db820 100644
--- a/clients/web_risk/mix.exs
+++ b/clients/web_risk/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.WebRisk.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/web_security_scanner/mix.exs b/clients/web_security_scanner/mix.exs
index b58e790b9a..42167b8479 100644
--- a/clients/web_security_scanner/mix.exs
+++ b/clients/web_security_scanner/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.WebSecurityScanner.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/webmaster/mix.exs b/clients/webmaster/mix.exs
index 855ba166fb..cf702144a9 100644
--- a/clients/webmaster/mix.exs
+++ b/clients/webmaster/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Webmaster.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/workflow_executions/mix.exs b/clients/workflow_executions/mix.exs
index 067c1cd26d..d0ef026606 100644
--- a/clients/workflow_executions/mix.exs
+++ b/clients/workflow_executions/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.WorkflowExecutions.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/workflows/mix.exs b/clients/workflows/mix.exs
index 7316d154b7..83ff2722d8 100644
--- a/clients/workflows/mix.exs
+++ b/clients/workflows/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.Workflows.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/you_tube/mix.exs b/clients/you_tube/mix.exs
index e15d5adf18..92c78ec137 100644
--- a/clients/you_tube/mix.exs
+++ b/clients/you_tube/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.YouTube.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/you_tube_analytics/mix.exs b/clients/you_tube_analytics/mix.exs
index c0daf62569..536b6ca526 100644
--- a/clients/you_tube_analytics/mix.exs
+++ b/clients/you_tube_analytics/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.YouTubeAnalytics.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end
 
diff --git a/clients/you_tube_reporting/mix.exs b/clients/you_tube_reporting/mix.exs
index 17efb1b282..a8e7bb4ae7 100644
--- a/clients/you_tube_reporting/mix.exs
+++ b/clients/you_tube_reporting/mix.exs
@@ -42,7 +42,7 @@ defmodule GoogleApi.YouTubeReporting.Mixfile do
     [
       {:google_gax, "~> 0.4"},
 
-      {:ex_doc, "~> 0.16", only: :dev}
+      {:ex_doc, "~> 0.28", only: :dev}
     ]
   end