diff --git a/internal/types/k8s.go b/internal/types/k8s.go
index 922707d623..619394856b 100644
--- a/internal/types/k8s.go
+++ b/internal/types/k8s.go
@@ -104,6 +104,8 @@ func KindOf(obj any) string {
 		return KindApisixTls
 	case *v2.ApisixConsumer:
 		return KindApisixConsumer
+	case *v2.ApisixUpstream:
+		return KindApisixUpstream
 	case *v1alpha1.HTTPRoutePolicy:
 		return KindHTTPRoutePolicy
 	case *v1alpha1.BackendTrafficPolicy: