diff --git a/DB.py b/DB.py
index c4847f7..1dc90d8 100644
--- a/DB.py
+++ b/DB.py
@@ -7,7 +7,7 @@ import time, copy, threading
 from typing import List, Dict
 from sqlalchemy import (
     create_engine, MetaData, Table, Column,
-    BigInteger, Integer, String, Text, DateTime
+    BigInteger, Integer, String, Text, DateTime, tuple_
 )
 from sqlalchemy.dialects.mysql import insert as mysql_insert
 from logger import logger