diff --git a/.azure-pipelines/azure-pipelines-linux.yml b/.azure-pipelines/azure-pipelines-linux.yml
index 79414cd..f3c0afb 100755
--- a/.azure-pipelines/azure-pipelines-linux.yml
+++ b/.azure-pipelines/azure-pipelines-linux.yml
@@ -5,7 +5,7 @@
 jobs:
 - job: linux
   pool:
-    vmImage: ubuntu-16.04
+    vmImage: ubuntu-latest
   strategy:
     matrix:
       linux_64_bla_vendorGeneric:
diff --git a/.ci_support/linux_64_bla_vendorGeneric.yaml b/.ci_support/linux_64_bla_vendorGeneric.yaml
index eb6ff79..7ca6e75 100644
--- a/.ci_support/linux_64_bla_vendorGeneric.yaml
+++ b/.ci_support/linux_64_bla_vendorGeneric.yaml
@@ -37,11 +37,13 @@ liblapack:
 liblapacke:
 - 3.8 *netlib
 libprotobuf:
-- '3.16'
+- '3.18'
 libxml2:
 - '2.9'
 lzo:
 - '2'
+mkl_devel:
+- '2021'
 pin_run_as_build:
   arpack:
     max_pin: x.x.x
diff --git a/.ci_support/linux_64_bla_vendorIntel.yaml b/.ci_support/linux_64_bla_vendorIntel.yaml
index f8a968d..d6d461a 100644
--- a/.ci_support/linux_64_bla_vendorIntel.yaml
+++ b/.ci_support/linux_64_bla_vendorIntel.yaml
@@ -37,11 +37,13 @@ liblapack:
 liblapacke:
 - 3.8 *netlib
 libprotobuf:
-- '3.16'
+- '3.18'
 libxml2:
 - '2.9'
 lzo:
 - '2'
+mkl_devel:
+- '2021'
 pin_run_as_build:
   arpack:
     max_pin: x.x.x
diff --git a/.ci_support/migrations/libprotobuf316.yaml b/.ci_support/migrations/libprotobuf318.yaml
similarity index 66%
rename from .ci_support/migrations/libprotobuf316.yaml
rename to .ci_support/migrations/libprotobuf318.yaml
index 3721186..328967a 100644
--- a/.ci_support/migrations/libprotobuf316.yaml
+++ b/.ci_support/migrations/libprotobuf318.yaml
@@ -3,5 +3,5 @@ __migrator:
   kind: version
   migration_number: 1
 libprotobuf:
-- '3.16'
-migrator_ts: 1620379043.9019938
+- '3.18'
+migrator_ts: 1631764220.7977521
diff --git a/.ci_support/osx_64_bla_vendorGeneric.yaml b/.ci_support/osx_64_bla_vendorGeneric.yaml
index 76f8d42..5e0e2c5 100644
--- a/.ci_support/osx_64_bla_vendorGeneric.yaml
+++ b/.ci_support/osx_64_bla_vendorGeneric.yaml
@@ -35,13 +35,15 @@ liblapack:
 liblapacke:
 - 3.8 *netlib
 libprotobuf:
-- '3.16'
+- '3.18'
 libxml2:
 - '2.9'
 lzo:
 - '2'
 macos_machine:
 - x86_64-apple-darwin13.4.0
+mkl_devel:
+- '2021'
 pin_run_as_build:
   arpack:
     max_pin: x.x.x
diff --git a/.ci_support/osx_64_bla_vendorIntel.yaml b/.ci_support/osx_64_bla_vendorIntel.yaml
index cfaa13d..cc1bb6f 100644
--- a/.ci_support/osx_64_bla_vendorIntel.yaml
+++ b/.ci_support/osx_64_bla_vendorIntel.yaml
@@ -35,13 +35,15 @@ liblapack:
 liblapacke:
 - 3.8 *netlib
 libprotobuf:
-- '3.16'
+- '3.18'
 libxml2:
 - '2.9'
 lzo:
 - '2'
 macos_machine:
 - x86_64-apple-darwin13.4.0
+mkl_devel:
+- '2021'
 pin_run_as_build:
   arpack:
     max_pin: x.x.x
diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index 3c2a13f..6d447ec 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -26,7 +26,7 @@ source:
 
 {% set lc, vs, ve, prefix, parbuild = "\\", "$", "", "$PREFIX", "-j $CPU_COUNT" %}  # [unix]
 build:
-  number: 11
+  number: 12
   skip: true  # [win32 or win]
   merge_build_host: true  # [linux and bla_vendor == "Generic"]
   script: |