diff --git a/cadence/activity_loop.py b/cadence/activity_loop.py
index b0cdcce..7c6f261 100644
--- a/cadence/activity_loop.py
+++ b/cadence/activity_loop.py
@@ -38,7 +38,7 @@ def activity_task_loop(worker: Worker):
                 return
             except Exception as ex:
                 logger.error("PollForActivityTask error: %s", ex)
-                continue
+                raise
             if err:
                 logger.error("PollForActivityTask failed: %s", err)
                 continue