diff --git a/requirements_dev.txt b/requirements_dev.txt
index a99d164..f34b854 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -4,4 +4,4 @@ pytest
 pytest-benchmark
 pytest-cov
 pytest-pretty 
-pytz==2023.4
+pytz==2024.1