diff --git a/pyproject.toml b/pyproject.toml
index 237f9fe..ca22ce1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -51,7 +51,7 @@ dependencies = [
     "click==8.4.2",
     "x-wr-timezone==2.0.1",
     "tzlocal==5.4.4",
-    "tzdata==2026.2",
+    "tzdata==2026.3",
     "python-dateutil==2.9.0.post0",
     "six==1.17.0",
 ]