diff --git a/sentry_sdk/integrations/arq.py b/sentry_sdk/integrations/arq.py
index 1ea8e32fb3..b0b3d3f03e 100644
--- a/sentry_sdk/integrations/arq.py
+++ b/sentry_sdk/integrations/arq.py
@@ -214,7 +214,8 @@ def _sentry_create_worker(*args, **kwargs):
             ]
         if hasattr(settings_cls, "cron_jobs"):
             settings_cls.cron_jobs = [
-                _get_arq_cron_job(cron_job) for cron_job in settings_cls.cron_jobs
+                _get_arq_cron_job(cron_job)
+                for cron_job in (settings_cls.cron_jobs or [])
             ]
 
         if "functions" in kwargs: