diff --git a/flake.nix b/flake.nix
index 105e19a..0786f3a 100644
--- a/flake.nix
+++ b/flake.nix
@@ -52,6 +52,7 @@
             {
               home-manager.useGlobalPkgs = true;
               home-manager.useUserPackages = true;
+              home-manager.backupFileExtension = "backup";
               home-manager.extraSpecialArgs = {inherit inputs;};
               home-manager.sharedModules = [
                 inputs.sops-nix.homeManagerModules.sops