diff --git a/graphene_django/utils/testing.py b/graphene_django/utils/testing.py
index 63d41fa..ca0d185 100644
--- a/graphene_django/utils/testing.py
+++ b/graphene_django/utils/testing.py
@@ -4,8 +4,10 @@ import warnings
 from django.test import Client, TestCase, TransactionTestCase
 
 from graphene_django.settings import graphene_settings
+
 DEFAULT_GRAPHQL_URL = "/graphql"
 
+
 def graphql_query(
     query,
     operation_name=None,