diff --git a/cicd/pipelines/tasks/task_publish_unstable.jenkins b/cicd/pipelines/tasks/task_publish_unstable.jenkins
index e19d538..61d2d23 100644
--- a/cicd/pipelines/tasks/task_publish_unstable.jenkins
+++ b/cicd/pipelines/tasks/task_publish_unstable.jenkins
@@ -4,7 +4,7 @@
     def script = """
         aptly snapshot list --sort=time --raw \
             | grep -E '^${repository_stem}-' \
-            | head -n1
+            | tail -n1
     """
 
     return sh(returnStdout: true, script: script).trim()
@@ -44,7 +44,7 @@
                 sh "cp /etc/aptly.conf ~/.aptly.conf"
                 withEnv(['GNUPGHOME=/var/lib/aptly/.gnupg']) {
                     def debianMirrorSnapshotName = getLatestSnapshot('debian-buster')
-                    def coreSnapshotName = getLatestSnapshot('core-unstable')
+                    def coreSnapshotName = getLatestSnapshot('unstable-core')
                     def bspSnapshotName  = getLatestSnapshot('unstable-bsp-enterprise')
                     def date = new Date()
                     String stamp = date.format("yyyyMMdd-HHmmss")