diff --git a/proxy/Dockerfile b/proxy/Dockerfile
index c7861d1cfe71e9e2c605fa9fd40229d1e01f3c9c..83d5f04f128ae006e435a91cc69ef40987cfedaf 100644
--- a/proxy/Dockerfile
+++ b/proxy/Dockerfile
@@ -1,5 +1,5 @@
-FROM debian:buster
-MAINTAINER Ansgar.Burchardt@tu-dresden.de
+FROM debian:bookworm
+MAINTAINER ansgar.burchardt@tu-dresden.de
 RUN \
   export DEBIAN_FRONTEND=noninteractive; \
   rm -f /etc/apt/apt.conf.d/docker-gzip-indexes \