diff --git a/backend/requirements.txt b/backend/requirements.txt
index b1862b4..fb8cefe 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -41,7 +41,7 @@ tqdm==4.67.3
 typer==0.24.1
 typing-inspection==0.4.2
 typing_extensions==4.15.0
-tzdata==2025.3
+tzdata==2026.2
 uvicorn==0.29.0
 uvloop==0.22.1
 watchfiles==1.1.1