diff --git a/requirements_dev.txt b/requirements_dev.txt
index 23f65b9..552b758 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -24,7 +24,7 @@ pyflakes==1.2.3
 Pygments==2.1.3
 pytest==2.9.2
 python-dateutil==2.5.3
-pytz==2016.6.1
+pytz==2024.1
 PyYAML==3.11
 requests==2.10.0
 six==1.10.0