diff --git a/Dockerfile b/Dockerfile
index 93b979c..5665bae 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,8 @@
-ARG DEBIAN_RELEASE=buster
+ARG DEBIAN_RELEASE=bookworm
 FROM debian:$DEBIAN_RELEASE AS builder
 
 ARG GVAAPP=gva
-ARG POETRY_VERSION=1.3.1
+ARG POETRY_VERSION=1.7.1
 
 ENV LC_ALL=C.UTF-8
 ENV LANG=C.UTF-8
@@ -26,7 +26,7 @@ WORKDIR /srv/$GVAAPP
 
 COPY poetry.lock pyproject.toml /srv/$GVAAPP/
 
-RUN /root/.local/bin/poetry install --only=main
+RUN /root/.local/bin/poetry install --only=main --no-root
 
 FROM debian:$DEBIAN_RELEASE
 LABEL maintainer="Jan Dittberner <jan@dittberner.info>"
diff --git a/docker-compose.yml b/docker-compose.yml
index 4e611c1..46f5669 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -19,7 +19,7 @@ services:
     volumes:
       - "redis_data:/var/lib/redis"
   gva:
-    image: gnuviech/gva:buster
+    image: gnuviech/gva:bookworm
     build:
       context: .
       args:
@@ -67,7 +67,7 @@ services:
     volumes:
       - "../gvaldap/gvaldap:/srv/gvaldap/gvaldap"
   file:
-    image: gnuviech/gvafile:buster
+    image: gnuviech/gvafile:bookworm
     build:
       context: ../gvafile
       args: