diff --git a/tests/integration/test_adversarial_filter_e2e.py b/tests/integration/test_adversarial_filter_e2e.py
index 751f301..390379e 100644
--- a/tests/integration/test_adversarial_filter_e2e.py
+++ b/tests/integration/test_adversarial_filter_e2e.py
@@ -171,6 +171,7 @@ class _MockLLM:
         *,
         session_id: str | None = None,
         parent_call_id: str | None = None,
+        cache_salt: str | None = None,
     ) -> LLMResponse:
         content = json.dumps(
             {"action": {"tool": "submit_answer", "args": {"answer": self._answer}}}