diff --git a/tests/integration/authorization/test_tool_search_replay_guardrails.py b/tests/integration/authorization/test_tool_search_replay_guardrails.py
index 14f647ecf94..2f0ca383201 100644
--- a/tests/integration/authorization/test_tool_search_replay_guardrails.py
+++ b/tests/integration/authorization/test_tool_search_replay_guardrails.py
@@ -67,7 +67,12 @@ def _config(directory: Path, model: str, upstream: str, shell: str) -> Path:
                 "router_settings": {"disable_cooldowns": True},
                 "litellm_settings": {
                     "cache": True,
-                    "cache_params": {"type": "redis", "host": "os.environ/REDIS_HOST", "port": "os.environ/REDIS_PORT"},
+                    "cache_params": {
+                        "type": "redis",
+                        "host": "os.environ/REDIS_HOST",
+                        "port": "os.environ/REDIS_PORT",
+                        "max_messages": None,
+                    },
                 },
                 "guardrails": [
                     {