diff --git a/tools/requirements.txt b/tools/requirements.txt
index fb6b35753..41c43d394 100644
--- a/tools/requirements.txt
+++ b/tools/requirements.txt
@@ -1,7 +1,7 @@
 aiohttp==3.7.4
 async-timeout==3.0.1
 logbook==1.5.3
-pytz==2021.1
+pytz==2021.3
 raven==6.10.0
 structlog==21.1.0
 taskcluster==44.2.2