diff --git a/libs/langchain/tests/unit_tests/schema/runnable/test_runnable.py b/libs/langchain/tests/unit_tests/schema/runnable/test_runnable.py
index 7b80489243f..98cab172a56 100644
--- a/libs/langchain/tests/unit_tests/schema/runnable/test_runnable.py
+++ b/libs/langchain/tests/unit_tests/schema/runnable/test_runnable.py
@@ -171,11 +171,21 @@ async def test_default_method_implementations(mocker: MockerFixture) -> None:
     assert spy.call_args_list == [
         mocker.call(
             "hello",
-            dict(metadata={"key": "value"}, tags=[], callbacks=None, _locals={}),
+            dict(
+                metadata={"key": "value"},
+                tags=[],
+                callbacks=None,
+                _locals={},
+            ),
         ),
         mocker.call(
             "wooorld",
-            dict(metadata={"key": "value"}, tags=[], callbacks=None, _locals={}),
+            dict(
+                metadata={"key": "value"},
+                tags=[],
+                callbacks=None,
+                _locals={},
+            ),
         ),
     ]