diff --git a/hc/api/tests/test_update_check.py b/hc/api/tests/test_update_check.py
index 8c7e3c52..8c7f324a 100644
--- a/hc/api/tests/test_update_check.py
+++ b/hc/api/tests/test_update_check.py
@@ -255,7 +255,7 @@ class UpdateCheckTestCase(BaseTestCase):
         self.check.schedule = "5 * * * *"
         self.check.save()
 
-        samples = ["* invalid *", "1,2 3,* * * *", "0 0 31 2 *"]
+        samples = ["* invalid *", "1,2 61 * * *", "0 0 31 2 *"]
         for sample in samples:
             r = self.post(self.check.code, {"api_key": "X" * 32, "schedule": sample})
             self.assertEqual(r.status_code, 400, "Did not reject '%s'" % sample)
diff --git a/hc/front/tests/test_update_timeout.py b/hc/front/tests/test_update_timeout.py
index 81366669..31fde642 100644
--- a/hc/front/tests/test_update_timeout.py
+++ b/hc/front/tests/test_update_timeout.py
@@ -74,7 +74,7 @@ class UpdateTimeoutTestCase(BaseTestCase):
 
     def test_it_validates_cron_expression(self):
         self.client.login(username="alice@example.org", password="password")
-        samples = ["* invalid *", "1,2 3,* * * *", "0 0 31 2 *"]
+        samples = ["* invalid *", "1,2 61 * * *", "0 0 31 2 *"]
 
         for sample in samples:
             payload = {"kind": "cron", "schedule": sample, "tz": "UTC", "grace": 60}
diff --git a/requirements.txt b/requirements.txt
index c7776576..f914610b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 cron-descriptor==1.2.24
-croniter==1.0.5
+croniter==1.0.6
 Django==3.1.6
 django-compressor==2.4
 fido2