diff --git a/gitlab-ci/Dockerfile b/gitlab-ci/Dockerfile
index 73a218a5324b2503cb6c586f1aa8dc1b758b23bd..baac122b999ee3b2bf115a302ecb588b86f9e623 100644
--- a/gitlab-ci/Dockerfile
+++ b/gitlab-ci/Dockerfile
@@ -1,4 +1,4 @@
-FROM registry.git.slub-dresden.de/slub-digitalpreservation/submissionapplications4rosetta/debian:bullseye-slim
+FROM sdvharbor.slub-dresden.de/replication/debian:bookworm-slim
 
 ARG GITDIR
 ENV DEBIAN_FRONTEND=noninteractive
@@ -9,7 +9,7 @@ ENV EXLIBRIS_PATH=/exlibris
 RUN apt-get update; \
     apt-get install -y --no-install-recommends gnupg wget; \
     wget -O - http://sdvdebianrepo.slub-dresden.de/deb-repository/pub.gpg.key | apt-key add - ; \
-    echo "deb http://sdvdebianrepo.slub-dresden.de/deb-repository bullseye main" > /etc/apt/sources.list.d/slub.list;
+    echo "deb http://sdvdebianrepo.slub-dresden.de/deb-repository bookworm main" > /etc/apt/sources.list.d/slub.list;
 
 RUN apt-get update; \
     apt-get -y upgrade; \