diff --git a/requirements/base.txt b/requirements/base.txt
index 013234b2..8f8cddd1 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -41,7 +41,7 @@ pynacl==1.2.1
 python-cas==1.2.0
 python-dateutil==2.7.3
 python-dotenv==0.8.2
-pytz==2018.5
+pytz==2023.3.post1
 raven==6.9.0
 requests==2.19.1
 simplejson==3.16.0
diff --git a/requirements/development.txt b/requirements/development.txt
index 1b1a5f1b..c7caf4ea 100644
--- a/requirements/development.txt
+++ b/requirements/development.txt
@@ -6,5 +6,5 @@ flake8==3.5.0
 mccabe==0.6.1
 pycodestyle==2.3.1
 pyflakes==1.6.0
-pytz==2018.5
+pytz==2023.3.post1
 sqlparse==0.2.4