diff --git a/home-manager.nix b/home-manager.nix
index e1e9d25..4746ecb 100644
--- a/home-manager.nix
+++ b/home-manager.nix
@@ -34,4 +34,6 @@ in
             };
         };
     };
+
+    home-manager.backupFileExtension = "backup";
 }