diff --git a/src/validators/cron.py b/src/validators/cron.py
index a8449b6a..f5daba05 100644
--- a/src/validators/cron.py
+++ b/src/validators/cron.py
@@ -72,7 +72,7 @@ def cron(value: str, /):
         return False
     if not _validate_cron_component(months, 1, 12):
         return False
-    if not _validate_cron_component(weekdays, 0, 6):
+    if not _validate_cron_component(weekdays, 0, 7):
         return False
 
     return True
diff --git a/tests/test_cron.py b/tests/test_cron.py
index e0b2a199..52482fbb 100644
--- a/tests/test_cron.py
+++ b/tests/test_cron.py
@@ -22,6 +22,9 @@
         "0 3-6 * * *",
         "*/15 0,6,12,18 * * *",
         "0 12 * * 0",
+        "0 12 * * 7",
+        "0 0 * * 0-7",
+        "0 0 * * 0,7",
         "*/61 * * * *",
         # "5-10/2 * * * *", # this is valid, but not supported yet
     ],