diff --git a/Dockerfile b/Dockerfile
index dea5b2a..effeae9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,10 +1,10 @@
-FROM debian:bullseye
+FROM debian:bookworm
 MAINTAINER yohan <783b8c87@scimetis.net>
 ENV DEBIAN_FRONTEND noninteractive
 ENV TZ=Europe/Paris
 RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
-RUN echo "deb http://ftp.debian.org/debian bullseye-backports main" >> /etc/apt/sources.list
-RUN apt-get update && apt-get -y install apache2 && apt-get -y install python3-certbot-apache -t bullseye-backports
+RUN echo "deb http://ftp.debian.org/debian bookworm-backports main" >> /etc/apt/sources.list
+RUN apt-get update && apt-get -y install apache2 && apt-get -y install python3-certbot-apache -t bookworm-backports
 RUN a2enmod ssl proxy proxy_http rewrite headers proxy_wstunnel
 EXPOSE 80
 EXPOSE 443