diff --git a/tests/conftest.py b/tests/conftest.py
index 2005dbe57..1e1db3730 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -119,6 +119,8 @@ async def env(env_type: str) -> AsyncGenerator[WorkflowEnvironment, None]:
                 "--dynamic-config-value",
                 "frontend.activityAPIsEnabled=true",
                 "--dynamic-config-value",
+                "frontend.enableCancelWorkerPollsOnShutdown=true",
+                "--dynamic-config-value",
                 "component.nexusoperations.recordCancelRequestCompletionEvents=true",
                 "--dynamic-config-value",
                 "activity.enableStandalone=true",