diff --git a/tests/test_utils_reqser.py b/tests/test_utils_reqser.py
index c8d1db138..ee68cf6b1 100644
--- a/tests/test_utils_reqser.py
+++ b/tests/test_utils_reqser.py
@@ -137,10 +137,12 @@ class TestSpiderMixin:
     def __mixin_callback(self, response):
         pass
 
+
 class TestSpiderDelegation:
     def delegated_callback(self, response):
         pass
 
+
 def parse_item(response):
     pass