diff --git a/pageindex/backend/cloud.py b/pageindex/backend/cloud.py
index 5b6949a..2827cc7 100644
--- a/pageindex/backend/cloud.py
+++ b/pageindex/backend/cloud.py
@@ -6,7 +6,6 @@ API reference: https://github.com/VectifyAI/pageindex_sdk
 from __future__ import annotations
 import json
 import logging
-import os
 import re
 import time
 import urllib.parse