diff --git a/tests/contrib/openai_agents/test_openai_streaming.py b/tests/contrib/openai_agents/test_openai_streaming.py
index 851dc207d..ab711cd86 100644
--- a/tests/contrib/openai_agents/test_openai_streaming.py
+++ b/tests/contrib/openai_agents/test_openai_streaming.py
@@ -159,7 +159,9 @@ async def stream_response(
                 input_tokens=10,
                 output_tokens=5,
                 total_tokens=15,
-                input_tokens_details=InputTokensDetails(cached_tokens=0),
+                input_tokens_details=InputTokensDetails.model_validate(
+                    {"cached_tokens": 0, "cache_write_tokens": 0}
+                ),
                 output_tokens_details=OutputTokensDetails(reasoning_tokens=0),
             ),
         )