diff --git a/libs/partners/chroma/tests/unit_tests/test_async_vectorstores.py b/libs/partners/chroma/tests/unit_tests/test_async_vectorstores.py
index 78f6eabc91b..e54d1dea209 100644
--- a/libs/partners/chroma/tests/unit_tests/test_async_vectorstores.py
+++ b/libs/partners/chroma/tests/unit_tests/test_async_vectorstores.py
@@ -414,7 +414,7 @@ async def test_async_empty_metadata_handling() -> None:
 
 
 @pytest.mark.asyncio
-async def test_concurrent_async_operations():
+async def test_concurrent_async_operations() -> None:
     """Test that multiple async operations can run concurrently."""
     async_client = MockAsyncClient()
 
@@ -454,3 +454,4 @@ async def test_concurrent_async_operations():
 
 
 
+