diff --git a/libs/core/tests/unit_tests/runnables/test_config.py b/libs/core/tests/unit_tests/runnables/test_config.py
index 397adf7b06c..7ffb407a1b5 100644
--- a/libs/core/tests/unit_tests/runnables/test_config.py
+++ b/libs/core/tests/unit_tests/runnables/test_config.py
@@ -228,13 +228,11 @@ def test_inherit_run_name_enabled() -> None:
 
 def test_inherit_run_name_with_chain() -> None:
     """Test inherit_run_name behavior in a chain of runnables."""
-    from typing import List
-
     from langchain_core.callbacks.base import BaseCallbackHandler
     from langchain_core.runnables import RunnableLambda
 
     # Track run names through callbacks
-    captured_names: List[str] = []
+    captured_names: list[str] = []
 
     class TestCallbackHandler(BaseCallbackHandler):
         def on_chain_start(self, serialized: dict, inputs: Any, **kwargs: Any) -> None:
@@ -370,3 +368,4 @@ def test_inherit_run_name_merge_configs() -> None:
         "inherit_run_name should pass through ensure_config"
     )
     assert ensured.get("run_name") == "test_run", "run_name should be preserved"
+