diff --git a/db/points_db.py b/db/points_db.py
index 3ae6709..0139963 100644
--- a/db/points_db.py
+++ b/db/points_db.py
@@ -3,7 +3,7 @@
 积分系统数据库操作类
 """
 import logging
-from datetime import datetime
+from datetime import datetime, timedelta
 from enum import Enum
 from typing import Dict, List, Optional, Tuple, Any