diff --git a/requirements.txt b/requirements.txt
index 6ca397d..e23cc3a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ python-dateutil==2.8.2
     # via
     #   -r requirements.in
     #   holidays
-pytz==2023.3.post1
+pytz==2023.4
     # via -r requirements.in
 six==1.16.0
     # via python-dateutil