diff --git a/clients/migration_center/lib/google_api/migration_center/v1/metadata.ex b/clients/migration_center/lib/google_api/migration_center/v1/metadata.ex
index 7caec23787..d990f363e8 100644
--- a/clients/migration_center/lib/google_api/migration_center/v1/metadata.ex
+++ b/clients/migration_center/lib/google_api/migration_center/v1/metadata.ex
@@ -20,7 +20,7 @@ defmodule GoogleApi.MigrationCenter.V1 do
   API client metadata for GoogleApi.MigrationCenter.V1.
   """
 
-  @discovery_revision "20240321"
+  @discovery_revision "20240411"
 
   def discovery_revision(), do: @discovery_revision
 end
diff --git a/clients/migration_center/lib/google_api/migration_center/v1/model/aggregate_assets_values_request.ex b/clients/migration_center/lib/google_api/migration_center/v1/model/aggregate_assets_values_request.ex
index 56b24b5a9f..f11c8441d5 100644
--- a/clients/migration_center/lib/google_api/migration_center/v1/model/aggregate_assets_values_request.ex
+++ b/clients/migration_center/lib/google_api/migration_center/v1/model/aggregate_assets_values_request.ex
@@ -22,7 +22,7 @@ defmodule GoogleApi.MigrationCenter.V1.Model.AggregateAssetsValuesRequest do
   ## Attributes
 
   *   `aggregations` (*type:* `list(GoogleApi.MigrationCenter.V1.Model.Aggregation.t)`, *default:* `nil`) - Array of aggregations to perform. Up to 25 aggregations can be defined.
-  *   `filter` (*type:* `String.t`, *default:* `nil`) - The aggregation will be performed on assets that match the provided filter.
+  *   `filter` (*type:* `String.t`, *default:* `nil`) - Optional. The aggregation will be performed on assets that match the provided filter.
   """
 
   use GoogleApi.Gax.ModelBase
diff --git a/clients/migration_center/lib/google_api/migration_center/v1/model/machine_series.ex b/clients/migration_center/lib/google_api/migration_center/v1/model/machine_series.ex
index 4e852f2dff..b5ae0b42e1 100644
--- a/clients/migration_center/lib/google_api/migration_center/v1/model/machine_series.ex
+++ b/clients/migration_center/lib/google_api/migration_center/v1/model/machine_series.ex
@@ -17,11 +17,11 @@
 
 defmodule GoogleApi.MigrationCenter.V1.Model.MachineSeries do
   @moduledoc """
-  A Compute Engine machine series.
+  A machine series, for a target product (e.g. Compute Engine, Google Cloud VMware Engine).
 
   ## Attributes
 
-  *   `code` (*type:* `String.t`, *default:* `nil`) - Code to identify a Compute Engine machine series. Consult https://cloud.google.com/compute/docs/machine-resource#machine_type_comparison for more details on the available series.
+  *   `code` (*type:* `String.t`, *default:* `nil`) - Code to identify a machine series. Consult this for more details on the available series for Compute Engine: https://cloud.google.com/compute/docs/machine-resource#machine_type_comparison Consult this for more details on the available series for Google Cloud VMware Engine: https://cloud.google.com/vmware-engine/pricing
   """
 
   use GoogleApi.Gax.ModelBase
diff --git a/clients/migration_center/lib/google_api/migration_center/v1/model/preference_set.ex b/clients/migration_center/lib/google_api/migration_center/v1/model/preference_set.ex
index ff72de598d..400d271449 100644
--- a/clients/migration_center/lib/google_api/migration_center/v1/model/preference_set.ex
+++ b/clients/migration_center/lib/google_api/migration_center/v1/model/preference_set.ex
@@ -26,7 +26,7 @@ defmodule GoogleApi.MigrationCenter.V1.Model.PreferenceSet do
   *   `displayName` (*type:* `String.t`, *default:* `nil`) - User-friendly display name. Maximum length is 63 characters.
   *   `name` (*type:* `String.t`, *default:* `nil`) - Output only. Name of the preference set.
   *   `updateTime` (*type:* `DateTime.t`, *default:* `nil`) - Output only. The timestamp when the preference set was last updated.
-  *   `virtualMachinePreferences` (*type:* `GoogleApi.MigrationCenter.V1.Model.VirtualMachinePreferences.t`, *default:* `nil`) - A set of preferences that applies to all virtual machines in the context.
+  *   `virtualMachinePreferences` (*type:* `GoogleApi.MigrationCenter.V1.Model.VirtualMachinePreferences.t`, *default:* `nil`) - Optional. A set of preferences that applies to all virtual machines in the context.
   """
 
   use GoogleApi.Gax.ModelBase
diff --git a/clients/migration_center/mix.exs b/clients/migration_center/mix.exs
index c77a0908f2..b983bb8a2b 100644
--- a/clients/migration_center/mix.exs
+++ b/clients/migration_center/mix.exs
@@ -18,7 +18,7 @@
 defmodule GoogleApi.MigrationCenter.Mixfile do
   use Mix.Project
 
-  @version "0.3.0"
+  @version "0.3.1"
 
   def project() do
     [