diff --git a/playbooks/adm.yml b/playbooks/adm.yml
index 2219ed5..2f99193 100644
--- a/playbooks/adm.yml
+++ b/playbooks/adm.yml
@@ -28,6 +28,7 @@
     - ansible_host
     - certbot
     - sshca
+    - ssh_known_hosts
     - role: keytab
       keytab_principals:
         - "host/{{ inventory_hostname }}@{{ kerberos_realm }}"