diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a4636590791d7fdcd55542eb697a1f04ce554dd5..9b3bdde2e096ebd46441996c3768dc0048800c8f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,10 +1,10 @@
 # Gitlab CI file to generate the system image .img file.
-image: debian:unstable-slim
+image: debian:bookworm-slim
 
 build:
   script: |
-    echo "deb http://deb.debian.org/debian bookworm main" > /etc/apt/sources.list.d/bookworm.list
-    printf 'Package: *\\nPin: release n=bookworm\\nPin-Priority: 100\\n' > /etc/apt/preferences.d/bookworm.pref
+    #echo "deb http://deb.debian.org/debian bookworm main" > /etc/apt/sources.list.d/bookworm.list
+    #printf 'Package: *\\nPin: release n=bookworm\\nPin-Priority: 100\\n' > /etc/apt/preferences.d/bookworm.pref
     apt update
     if [ ! -e /proc/sys/fs/binfmt_misc/status ]; then
       mount -t binfmt_misc binfmt_misc /proc/sys/fs/binfmt_misc