diff --git a/pkg/features/kube_features.go b/pkg/features/kube_features.go
index 228f9f1614e..d22fbf45500 100644
--- a/pkg/features/kube_features.go
+++ b/pkg/features/kube_features.go
@@ -235,6 +235,7 @@ const (
 
 	// owner: @janetkuo
 	// alpha: v1.12
+	// beta:  v1.21
 	//
 	// Allow TTL controller to clean up Pods and Jobs after they finish.
 	TTLAfterFinished featuregate.Feature = "TTLAfterFinished"