diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 49a13e6..ec56f23 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,5 +1,5 @@
 ---
-image: python:3.9-bullseye
+image: python:3.11-bookworm
 
 stages:
 - test
@@ -123,9 +123,7 @@ build_debian:
   - python3 setup.py egg_info install --root=package/debian/multischleuder/ --prefix=/usr --optimize=1
   - cd package/debian
   - sed -re "s/__MULTISCHLEUDER_VERSION__/${MULTISCHLEUDER_VERSION}/g" -i multischleuder/DEBIAN/control
-  - mkdir -p multischleuder/usr/lib/python3/dist-packages/
-  - rsync -a multischleuder/usr/lib/python3.9/site-packages/ multischleuder/usr/lib/python3/dist-packages/
-  - rm -rf multischleuder/usr/lib/python3.9/site-packages
+  - mv multischleuder/usr/lib/python3.11 multischleuder/usr/lib/python3
   - find multischleuder/usr/lib/python3/dist-packages -name __pycache__ -exec rm -r {} \; 2>/dev/null || true
   - find multischleuder/usr/lib/python3/dist-packages -name '*.pyc' -exec rm {} \;
   - find multischleuder/usr/lib/python3/dist-packages -name '*.pyo' -exec rm {} \;