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 b147cf2ce72..0a08f573cdb 100644
--- a/libs/partners/chroma/tests/unit_tests/test_async_vectorstores.py
+++ b/libs/partners/chroma/tests/unit_tests/test_async_vectorstores.py
@@ -103,7 +103,7 @@ class MockAsyncClient:
 
 
 @pytest.mark.asyncio
-async def test_async_client_initialization():
+async def test_async_client_initialization() -> None:
     """Test that Chroma can be initialized with an async client."""
     async_client = MockAsyncClient()
 
@@ -440,3 +440,4 @@ async def test_concurrent_async_operations():
     assert all(results[0])  # First add_texts returned IDs
     assert all(results[1])  # Second add_texts returned IDs
     assert isinstance(results[2], list)  # Search returned documents
+