diff --git a/fastapi/utils.py b/fastapi/utils.py
index 3c8fdb2f4..c4631d7ed 100644
--- a/fastapi/utils.py
+++ b/fastapi/utils.py
@@ -10,7 +10,6 @@ from typing import (
 )
 from weakref import WeakKeyDictionary
 
-
 import fastapi
 from fastapi._compat import (
     BaseConfig,