diff --git a/2configs/tools/core-gui.nix b/2configs/tools/core-gui.nix
index 654e83b..6d62e92 100644
--- a/2configs/tools/core-gui.nix
+++ b/2configs/tools/core-gui.nix
@@ -18,7 +18,7 @@
     gnome3.dconf
     wireshark
     xdotool
+    xorg.xbacklight
     scrot
-    
   ];
 }