diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8b5f9ed6f2e0a58cb9686db4cfa636422964465a..a6de868156369d1042cc97b4d0370223440c123b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -334,13 +334,13 @@ FileLicenceCheck:
     - CbmRoot
 
 .linux_variables: &linux_variables
-    OS: "Debian11"
+    OS: "Debian12"
     NCPU: 5
     FAIRSOFT_VERSION: "nov22p1"
     FAIRROOT_VERSION: "v18.8.0"
-    BASE_PATH: "/cvmfs/fairsoft.gsi.de/debian11"
+    BASE_PATH: "/cvmfs/fairsoft.gsi.de/debian12"
     SIMPATH: "$BASE_PATH/fairsoft/$FAIRSOFT_VERSION"
-    FAIRROOTPATH: "$BASE_PATH/fairroot/${FAIRROOT_VERSION}_${FAIRSOFT_VERSION}"
+    FAIRROOTPATH: "$BASE_PATH/fairroot/${FAIRROOT_VERSION}_fs_${FAIRSOFT_VERSION}"
     EXTRA_PATH: "${SIMPATH}/bin"
 
 .macosx_tag: &macosx_tag