diff --git a/src/pynamodb_utils/attributes.py b/src/pynamodb_utils/attributes.py
index 7c65306..f133e53 100644
--- a/src/pynamodb_utils/attributes.py
+++ b/src/pynamodb_utils/attributes.py
@@ -8,7 +8,6 @@
 from pynamodb.attributes import Attribute, MapAttribute
 from pynamodb.constants import NUMBER, STRING
 
-
 T = TypeVar("T", bound=Enum)
 _fail: Any = object()