diff --git a/pyproject.toml b/pyproject.toml
index 0a0c7a2a..b414bc48 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,7 +27,7 @@ dependencies = [
     "openai==2.30.0",
     "pyvda @ git+https://github.com/amnweb/pyvda@master",
     "python-dotenv==1.2.2",
-    "tzdata==2025.3",
+    "tzdata==2026.1",
     "winmica==1.0.3",
     "winrt.windows.foundation==3.2.1",
     "winrt.windows.foundation.collections==3.2.1",