diff --git a/tempora/schedule.py b/tempora/schedule.py
index a63fd0c..4c10d69 100644
--- a/tempora/schedule.py
+++ b/tempora/schedule.py
@@ -21,7 +21,7 @@
 
 if sys.version_info >= (3, 9):
     from zoneinfo import ZoneInfo
-else:
+else:  # pragma: no cover
     from backports.zoneinfo import ZoneInfo