diff --git a/autogpt_platform/backend/backend/copilot/sdk/service_test.py b/autogpt_platform/backend/backend/copilot/sdk/service_test.py
index 8c5be805ec..a45210eeee 100644
--- a/autogpt_platform/backend/backend/copilot/sdk/service_test.py
+++ b/autogpt_platform/backend/backend/copilot/sdk/service_test.py
@@ -398,6 +398,7 @@ _CONFIG_ENV_VARS = (
     "OPENAI_BASE_URL",
     "CHAT_USE_CLAUDE_CODE_SUBSCRIPTION",
     "CHAT_USE_CLAUDE_AGENT_SDK",
+    "CHAT_CLAUDE_AGENT_CROSS_USER_PROMPT_CACHE",
 )