diff --git a/home/darwin-work.nix b/home/darwin-work.nix
index c841e62..530b30a 100644
--- a/home/darwin-work.nix
+++ b/home/darwin-work.nix
@@ -23,4 +23,5 @@
   ];
 
   programs.home-manager.enable = true;
+  programs.home-manager.backupFileExtension = "backup";
 }