diff --git a/.woodpecker.yml b/.woodpecker.yml
index 745a45d..309b8ed 100644
--- a/.woodpecker.yml
+++ b/.woodpecker.yml
@@ -6,6 +6,7 @@ steps:
     image: git.balsys.eu.org/tomas/mkosi
     privileged: true
     commands:
+      - mkosi -d debian -r bullseye -t tar --bootable no --package systemd --output debian-11 --compress-output xz --checksum yes
       - mkosi -d debian -r bookworm -t tar --bootable no --package systemd --output debian-12 --compress-output xz --checksum yes
 
   publish: