diff --git a/requirements-dev.txt b/requirements-dev.txt
index 6687d0920a..f7dcc65ac2 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -68,7 +68,7 @@ tomli==2.3.0
 tomli_w==1.2.0
 tomlkit==0.13.3
 typing_extensions==4.15.0
-tzdata==2025.2
+tzdata==2026.1
 uritemplate==4.2.0
 urllib3==2.6.3
 wrapt==1.17.3