diff --git a/requirements.txt b/requirements.txt
index b7a70ca..beb0ea4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -45,7 +45,7 @@ pycodestyle==2.8.0
 pycparser==2.21
 pyflakes==2.4.0
 python-dateutil==2.8.2
-pytz==2021.1
+pytz==2023.3.post1
 pytz-deprecation-shim==0.1.0.post0
 requests==2.26.0
 requests-oauthlib==1.3.0