diff --git a/sqlor/dbpools.py b/sqlor/dbpools.py
index 43bf5c9..659dbd1 100755
--- a/sqlor/dbpools.py
+++ b/sqlor/dbpools.py
@@ -1,4 +1,4 @@
-
+import time
 import asyncio
 from traceback import format_exc
 from functools import wraps, partial