diff --git a/scripts/meta_transfer_as_rename2workload.py b/scripts/meta_transfer_as_rename2workload.py
index b48b97a4c..8a56ab7fb 100644
--- a/scripts/meta_transfer_as_rename2workload.py
+++ b/scripts/meta_transfer_as_rename2workload.py
@@ -215,7 +215,7 @@ def _trans_deploy(self, deploy_key, orig_value):
         if not self._belong_pod(nodename):
             return
 
-        self.workloads.update(wrk_id)
+        self.workloads.update({wrk_id})
 
         new_key = os.path.join(self.meta.new_root_prefix, self.deploy_prefix, appname, entrypoint, nodename, wrk_id)
         wrk = self.conv(orig_value, self.node_transfer)