diff --git a/Dockerfile b/Dockerfile
index 34b4b86..0249ffa 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.11.5-slim-bullseye@sha256:de917502e531b3f6e4a5acef017e9feef392cf3eb76826fd46d6810c70ae9b5e
+FROM python:3.13.0-slim-bullseye@sha256:5f806dfaaf027b52e0982a4aa0246acb902d8c8d12e0965015440099c63759a2
 WORKDIR /
 ENV TZ=Asia/Tokyo