diff --git a/Dockerfile b/Dockerfile
index 5106f08..6ef2111 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.12.5-slim-buster
+FROM python:3.12.5-slim-bullseye
 
 # python related environment variables
 ENV PYTHONDONTWRITEBYTECODE 1