diff --git a/pkg/workflow/action_sha_checker_integration_test.go b/pkg/workflow/action_sha_checker_integration_test.go
index f095da8c07e..c44c4db4d32 100644
--- a/pkg/workflow/action_sha_checker_integration_test.go
+++ b/pkg/workflow/action_sha_checker_integration_test.go
@@ -36,7 +36,7 @@ func TestActionSHAValidationIntegration(t *testing.T) {
 
 	// Create a lock file with the same SHAs (up-to-date scenario)
 	lockFile := filepath.Join(tmpDir, "test.lock.yml")
-	lockContent := `
+	lockContent := `# gh-aw-metadata: {"schema_version":"v1"}
 name: Test Workflow
 on: push
 jobs:
@@ -61,7 +61,7 @@ jobs:
 
 	// Create a lock file with outdated SHAs
 	outdatedLockFile := filepath.Join(tmpDir, "outdated.lock.yml")
-	outdatedContent := `
+	outdatedContent := `# gh-aw-metadata: {"schema_version":"v1"}
 name: Test Workflow
 on: push
 jobs:
@@ -92,7 +92,7 @@ func TestActionSHAValidationWithMissingCache(t *testing.T) {
 
 	// Create a lock file
 	lockFile := filepath.Join(tmpDir, "test.lock.yml")
-	lockContent := `
+	lockContent := `# gh-aw-metadata: {"schema_version":"v1"}
 name: Test Workflow
 on: push
 jobs:
@@ -122,7 +122,7 @@ func TestExtractActionsFromRealLockFile(t *testing.T) {
 	lockFile := filepath.Join(tmpDir, "realistic.lock.yml")
 
 	// Create a more realistic lock file with multiple jobs and steps
-	lockContent := `
+	lockContent := `# gh-aw-metadata: {"schema_version":"v1"}
 # This file was automatically generated by gh-aw
 name: CI Workflow
 on:
@@ -200,7 +200,7 @@ func TestValidationMessageFormat(t *testing.T) {
 	tmpDir := testutil.TempDir(t, "test-*")
 	lockFile := filepath.Join(tmpDir, "test.lock.yml")
 
-	lockContent := `
+	lockContent := `# gh-aw-metadata: {"schema_version":"v1"}
 name: Test
 on: push
 jobs:
@@ -232,7 +232,7 @@ func TestActionUsageVersionPopulation(t *testing.T) {
 	lockFile := filepath.Join(tmpDir, "test.lock.yml")
 
 	// Use an action that exists in action_pins.json
-	lockContent := `
+	lockContent := `# gh-aw-metadata: {"schema_version":"v1"}
 name: Test
 on: push
 jobs: