diff --git a/lass/5pkgs/xmonad-lass.nix b/lass/5pkgs/xmonad-lass.nix
index 38a9550df..67a1dc787 100644
--- a/lass/5pkgs/xmonad-lass.nix
+++ b/lass/5pkgs/xmonad-lass.nix
@@ -130,6 +130,11 @@ myKeyMap =
     , ("M4-S-q", return ())
 
     , ("M4-w", floatNext True >> spawn "${pkgs.copyq}/bin/copyq show")
+
+    , ("M4-<F1>", spawn "${pkgs.xorg.xbacklight}/bin/xbacklight -set 1")
+    , ("M4-<F2>", spawn "${pkgs.xorg.xbacklight}/bin/xbacklight -set 10")
+    , ("M4-<F3>", spawn "${pkgs.xorg.xbacklight}/bin/xbacklight -set 33")
+    , ("M4-<F4>", spawn "${pkgs.xorg.xbacklight}/bin/xbacklight -set 100")
     ]
 
 forkFile :: FilePath -> [String] -> Maybe [(String, String)] -> X ()