diff --git a/AwsCryptographicMaterialProviders/codebuild/release-python/validate.yml b/AwsCryptographicMaterialProviders/codebuild/release-python/validate.yml
index d701b5e33..9ff7aac5a 100644
--- a/AwsCryptographicMaterialProviders/codebuild/release-python/validate.yml
+++ b/AwsCryptographicMaterialProviders/codebuild/release-python/validate.yml
@@ -25,6 +25,9 @@ phases:
       - export PATH="$PWD/dafny:$PATH"
       # Switch back to the main directory
       - cd aws-cryptographic-material-providers-library
+      # Check out tests for release commit
+      - git fetch --tags
+      - git checkout $COMMIT_ID
       # Install test dependencies
       - pyenv install --skip-existing 3.11
       - pyenv local 3.11
diff --git a/AwsCryptographyPrimitives/codebuild/release-python/validate.yml b/AwsCryptographyPrimitives/codebuild/release-python/validate.yml
index 5b7b902db..0f70c76e0 100644
--- a/AwsCryptographyPrimitives/codebuild/release-python/validate.yml
+++ b/AwsCryptographyPrimitives/codebuild/release-python/validate.yml
@@ -20,6 +20,9 @@ phases:
       - export PATH="$PWD/dafny:$PATH"
       # Switch back to the main directory
       - cd aws-cryptographic-material-providers-library
+      # Check out tests for release commit
+      - git fetch --tags
+      - git checkout $COMMIT_ID
       # Install test dependencies
       - pyenv install --skip-existing 3.11
       - pyenv local 3.11
diff --git a/ComAmazonawsDynamodb/codebuild/release-python/validate.yml b/ComAmazonawsDynamodb/codebuild/release-python/validate.yml
index 8605dff53..7982f6a2f 100644
--- a/ComAmazonawsDynamodb/codebuild/release-python/validate.yml
+++ b/ComAmazonawsDynamodb/codebuild/release-python/validate.yml
@@ -20,6 +20,9 @@ phases:
       - export PATH="$PWD/dafny:$PATH"
       # Switch back to the main directory
       - cd aws-cryptographic-material-providers-library
+      # Check out tests for release commit
+      - git fetch --tags
+      - git checkout $COMMIT_ID
       # Install test dependencies
       - pyenv install --skip-existing 3.11
       - pyenv local 3.11
diff --git a/ComAmazonawsKms/codebuild/release-python/validate.yml b/ComAmazonawsKms/codebuild/release-python/validate.yml
index 665084553..eacc08663 100644
--- a/ComAmazonawsKms/codebuild/release-python/validate.yml
+++ b/ComAmazonawsKms/codebuild/release-python/validate.yml
@@ -20,6 +20,9 @@ phases:
       - export PATH="$PWD/dafny:$PATH"
       # Switch back to the main directory
       - cd aws-cryptographic-material-providers-library
+      # Check out tests for release commit
+      - git fetch --tags
+      - git checkout $COMMIT_ID
       # Install test dependencies
       - pyenv install --skip-existing 3.11
       - pyenv local 3.11
diff --git a/StandardLibrary/codebuild/release-python/validate.yml b/StandardLibrary/codebuild/release-python/validate.yml
index 3170b2dc1..7eed7fb46 100644
--- a/StandardLibrary/codebuild/release-python/validate.yml
+++ b/StandardLibrary/codebuild/release-python/validate.yml
@@ -20,6 +20,9 @@ phases:
       - export PATH="$PWD/dafny:$PATH"
       # Switch back to the main directory
       - cd aws-cryptographic-material-providers-library
+      # Check out tests for release commit
+      - git fetch --tags
+      - git checkout $COMMIT_ID
       # Install test dependencies
       - pyenv install --skip-existing 3.11
       - pyenv local 3.11