diff --git a/requirements.txt b/requirements.txt
index 39ae34f..ba982ed 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 numpy==2.5.3
-pytz==2026.3.post1
+pytz==2026.4
 PyYAML==6.0.3
 setuptools==84.0.0
 wheel==0.48.0