diff --git a/requirements.txt b/requirements.txt
index 68da059..cfcc53c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 icalendar>=7.2.0
 python-dateutil>=2.5.2
 python-hglib>=2.6.1
-pytz>=2022
+pytz>=2026.3.post1
 requests-futures>=0.9.8
 requests[security]>=2.7.0
 setuptools>=83.0.0