diff --git a/pkg/controller/instanceset/pod_role_event_handler.go b/pkg/controller/instanceset/pod_role_event_handler.go
index 237e755708c..f9ba68861b2 100644
--- a/pkg/controller/instanceset/pod_role_event_handler.go
+++ b/pkg/controller/instanceset/pod_role_event_handler.go
@@ -246,7 +246,7 @@ func updatePodRoleLabel(cli client.Client, reqCtx intctrlutil.RequestCtx,
 	roleName = strings.ToLower(roleName)
 
 	// update pod role label
-	patch := client.MergeFrom(pod.DeepCopy())
+	newPod := pod.DeepCopy()
 	role, ok := roleMap[roleName]
 	switch ok {
 	case true:
@@ -258,8 +258,8 @@ func updatePodRoleLabel(cli client.Client, reqCtx intctrlutil.RequestCtx,
 	if pod.Annotations == nil {
 		pod.Annotations = map[string]string{}
 	}
-	pod.Annotations[constant.LastRoleSnapshotVersionAnnotationKey] = version
-	return cli.Patch(ctx, pod, patch, inDataContext())
+	newPod.Annotations[constant.LastRoleSnapshotVersionAnnotationKey] = version
+	return cli.Update(ctx, newPod, inDataContext())
 }
 
 func inDataContext() *multicluster.ClientOption {