diff --git a/tests/integration/testdata/publish/template_create_app.yaml b/tests/integration/testdata/publish/template_create_app.yaml
index 8e132f09d4a..5d5fa78d378 100644
--- a/tests/integration/testdata/publish/template_create_app.yaml
+++ b/tests/integration/testdata/publish/template_create_app.yaml
@@ -33,6 +33,6 @@ Resources:
             Path: /hello
           Type: Api
       Handler: main.lambda_handler
-      Runtime: python3.9
+      Runtime: python3.14
     Type: AWS::Serverless::Function
 Transform: AWS::Serverless-2016-10-31
diff --git a/tests/integration/testdata/publish/template_create_app_version.yaml b/tests/integration/testdata/publish/template_create_app_version.yaml
index 99b1cb9179f..b941606e814 100644
--- a/tests/integration/testdata/publish/template_create_app_version.yaml
+++ b/tests/integration/testdata/publish/template_create_app_version.yaml
@@ -33,6 +33,6 @@ Resources:
             Path: /hello
           Type: Api
       Handler: main.lambda_handler
-      Runtime: python3.9
+      Runtime: python3.14
     Type: AWS::Serverless::Function
 Transform: AWS::Serverless-2016-10-31
diff --git a/tests/integration/testdata/publish/template_create_app_with_license_body.yaml b/tests/integration/testdata/publish/template_create_app_with_license_body.yaml
index 36f978d7827..32c6661d1a7 100644
--- a/tests/integration/testdata/publish/template_create_app_with_license_body.yaml
+++ b/tests/integration/testdata/publish/template_create_app_with_license_body.yaml
@@ -32,6 +32,6 @@ Resources:
             Path: /hello
           Type: Api
       Handler: main.lambda_handler
-      Runtime: python3.9
+      Runtime: python3.14
     Type: AWS::Serverless::Function
 Transform: AWS::Serverless-2016-10-31
diff --git a/tests/integration/testdata/publish/template_create_app_with_readme_body.yaml b/tests/integration/testdata/publish/template_create_app_with_readme_body.yaml
index 3bc45ff33c9..3f7765df8c2 100644
--- a/tests/integration/testdata/publish/template_create_app_with_readme_body.yaml
+++ b/tests/integration/testdata/publish/template_create_app_with_readme_body.yaml
@@ -32,6 +32,6 @@ Resources:
             Path: /hello
           Type: Api
       Handler: main.lambda_handler
-      Runtime: python3.9
+      Runtime: python3.14
     Type: AWS::Serverless::Function
 Transform: AWS::Serverless-2016-10-31
diff --git a/tests/integration/testdata/publish/template_not_packaged.yaml b/tests/integration/testdata/publish/template_not_packaged.yaml
index d5baf9593de..e32555082d6 100644
--- a/tests/integration/testdata/publish/template_not_packaged.yaml
+++ b/tests/integration/testdata/publish/template_not_packaged.yaml
@@ -33,6 +33,6 @@ Resources:
             Path: /hello
           Type: Api
       Handler: main.lambda_handler
-      Runtime: python3.9
+      Runtime: python3.14
     Type: AWS::Serverless::Function
 Transform: AWS::Serverless-2016-10-31
diff --git a/tests/integration/testdata/publish/template_update_app.yaml b/tests/integration/testdata/publish/template_update_app.yaml
index 4a3e0280086..14f4897a543 100644
--- a/tests/integration/testdata/publish/template_update_app.yaml
+++ b/tests/integration/testdata/publish/template_update_app.yaml
@@ -33,6 +33,6 @@ Resources:
             Path: /hello
           Type: Api
       Handler: main.lambda_handler
-      Runtime: python3.9
+      Runtime: python3.14
     Type: AWS::Serverless::Function
 Transform: AWS::Serverless-2016-10-31