diff --git a/nixos/modules/default.nix b/nixos/modules/default.nix
index 403e237..26ab16a 100644
--- a/nixos/modules/default.nix
+++ b/nixos/modules/default.nix
@@ -4,6 +4,7 @@
     ./bluetooth.nix
     ./boot.nix
     ./env.nix
+    ./home-manager.nix
     ./hyprland.nix
     ./mime.nix
     ./net.nix
diff --git a/nixos/modules/home-manager.nix b/nixos/modules/home-manager.nix
new file mode 100644
index 0000000..c0b1b7c
--- /dev/null
+++ b/nixos/modules/home-manager.nix
@@ -0,0 +1,3 @@
+{
+  home-manager.backupFileExtension = "backup";
+}