diff --git a/libs/partners/anthropic/tests/integration_tests/test_chat_models.py b/libs/partners/anthropic/tests/integration_tests/test_chat_models.py
index ab3f4032935..826622c7c1f 100644
--- a/libs/partners/anthropic/tests/integration_tests/test_chat_models.py
+++ b/libs/partners/anthropic/tests/integration_tests/test_chat_models.py
@@ -150,6 +150,7 @@ async def test_async_stream_twice() -> None:
     async for token in model.astream("hi"):
         assert isinstance(token, AIMessageChunk)
 
+    model = ChatAnthropic(model_name=MODEL_NAME)  # type: ignore[call-arg]
     async for token in model.astream("hi"):
         assert isinstance(token, AIMessageChunk)