diff --git a/group_vars/all/plain.yml b/group_vars/all/plain.yml
index b274fcd..c090bdb 100644
--- a/group_vars/all/plain.yml
+++ b/group_vars/all/plain.yml
@@ -115,6 +115,7 @@ default_users:
   - "nobody"
   - "elastic"
   - "postgres"
+  - "backuphamster"
   - "administrator"
   - "{{ admin_user }}"