diff --git a/tests/test_connection_pool.py b/tests/test_connection_pool.py
index 276e77cdb9..138fcad4c9 100644
--- a/tests/test_connection_pool.py
+++ b/tests/test_connection_pool.py
@@ -450,7 +450,7 @@ class MyConnection(redis.UnixDomainSocketConnection):
             pass
 
         pool = redis.ConnectionPool.from_url(
-            'unix:///socket', connection_class=MyConnection
+            "unix:///socket", connection_class=MyConnection
         )
         assert pool.connection_class == MyConnection
 
@@ -469,7 +469,7 @@ class MyConnection(redis.SSLConnection):
             pass
 
         pool = redis.ConnectionPool.from_url(
-            'rediss://my.host', connection_class=MyConnection
+            "rediss://my.host", connection_class=MyConnection
         )
         assert pool.connection_class == MyConnection