diff --git a/examples/lightrag_zhipu_postgres_demo.py b/examples/lightrag_zhipu_postgres_demo.py
index 1876bb8c..9187e2a2 100644
--- a/examples/lightrag_zhipu_postgres_demo.py
+++ b/examples/lightrag_zhipu_postgres_demo.py
@@ -1,5 +1,4 @@
 import asyncio
-import inspect
 import logging
 import os
 import time