diff --git a/tests/test_relations_slug.py b/tests/test_relations_slug.py
index cee18031d..680aee417 100644
--- a/tests/test_relations_slug.py
+++ b/tests/test_relations_slug.py
@@ -1,10 +1,10 @@
 from django.test import TestCase
+
+from rest_framework import serializers
 from tests.models import (
     ForeignKeySource, ForeignKeyTarget, NullableForeignKeySource
 )
 
-from rest_framework import serializers
-
 
 class ForeignKeyTargetSerializer(serializers.ModelSerializer):
     sources = serializers.SlugRelatedField(