diff --git a/tasks/main.yml b/tasks/main.yml
index 5cd7555..da66e83 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -30,6 +30,7 @@
     group: root
     mode: 'u=rw,g=r,o=r'
     validate: /usr/sbin/sshd -t -f %s
+    backup: yes
   notify:
     - restart ssh
 
diff --git a/vars/main.yml b/vars/main.yml
index 97be189..f67bc17 100644
--- a/vars/main.yml
+++ b/vars/main.yml
@@ -1,3 +1,3 @@
 ---
-playbook_version_number: 2057 # should be over ninethousand
+playbook_version_number: 2058 # should be over ninethousand
 playbook_version_path: 'role-sshd_chaos-bodensee_github.com.version'