diff --git a/requirements.txt b/requirements.txt
index bfe6305..cc3da84 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-tzdata==2025.3
+tzdata==2026.1
 fastapi==0.135.1
 pydantic==2.12.5
 uvicorn==0.41.0