diff --git a/requirements/default.txt b/requirements/default.txt
index 03c129a9..3dc623f7 100644
--- a/requirements/default.txt
+++ b/requirements/default.txt
@@ -4,4 +4,4 @@ django-timezone-field>=5.0
 backports.zoneinfo; python_version<"3.9"
 tzdata
 python-crontab>=2.3.4
-cron-descriptor>=1.2.32
+cron-descriptor>=1.2.32,<2.0.0