diff --git a/setup.py b/setup.py
index bfa429a..0b93081 100644
--- a/setup.py
+++ b/setup.py
@@ -20,7 +20,7 @@
     install_requires=[
         "psycopg2-binary==2.9.*",
         "pyyaml==6.0.*",
-        "croniter>=2.0,<3.1",
+        "croniter>=2.0,<6.1",
         "tabulate==0.9.*",
         "slack-sdk==3.37.*",
         "backoff==2.2.*",