diff --git a/tasks/RedHat.yml b/tasks/RedHat.yml
index 8b4c00b..a504aaa 100644
--- a/tasks/RedHat.yml
+++ b/tasks/RedHat.yml
@@ -87,6 +87,7 @@
     regexp: "{{ item.regexp }}"
     line: "{{ item.line }}"
     backrefs: yes
+    backup: yes
   with_items:
     - {regexp: "^127.0.0.1.+localdomain4$",
        line: "127.0.0.1   localhost {{ ansible_hostname }}"