diff --git a/roles/mail_forwarder/molecule/default/prepare.yml b/roles/mail_forwarder/molecule/default/prepare.yml
index 59708adff7853b2eb5ee5859b81839d36d2f00cc..e7ac23d688a3d20fc3b9e5ddb7ceb86027eb1594 100644
--- a/roles/mail_forwarder/molecule/default/prepare.yml
+++ b/roles/mail_forwarder/molecule/default/prepare.yml
@@ -69,6 +69,9 @@
         192.168.56.31: "parameters-mandatory-bullseye"
         192.168.56.32: "parameters-optional-bullseye"
         192.168.56.33: "parameters-no-incoming-bullseye"
+        192.168.56.21: "parameters-mandatory-bookworm"
+        192.168.56.22: "parameters-optional-bookworm"
+        192.168.56.23: "parameters-no-incoming-bookworm"
 
     - name: Install tools for testing
       apt: