diff --git a/flake.nix b/flake.nix
index 1930e8b..79117a6 100644
--- a/flake.nix
+++ b/flake.nix
@@ -33,10 +33,13 @@
           ./nixos/hardware.nix
           home-manager.nixosModules.home-manager
           {
-            home-manager.useGlobalPkgs = true;
-            home-manager.useUserPackages = true;
-            home-manager.users.${primaryUser} = import ./home/default.nix;
-            home-manager.extraSpecialArgs = { inherit inputs primaryUser; };
+            home-manager = {
+	    	useGlobalPkgs = true;
+        	useUserPackages = true;
+            	users.${primaryUser} = import ./home/default.nix;
+            	extraSpecialArgs = { inherit inputs primaryUser; };
+	    	backupFileExtension = "backup";
+	    };
           }
         ];
         specialArgs = { inherit inputs self primaryUser; };
diff --git a/home/shell.nix b/home/shell.nix
index 161f883..1c41485 100644
--- a/home/shell.nix
+++ b/home/shell.nix
@@ -8,6 +8,7 @@
     fastfetch # system stats
     tabiew # Table viewer
     glow # MD Viewer
+    btop
 
     llm # LLM in the Terminal