diff --git a/home-manager/home.nix b/home-manager/home.nix
index f6e4299..a93a5f2 100644
--- a/home-manager/home.nix
+++ b/home-manager/home.nix
@@ -18,7 +18,7 @@ in {
       # nixvim
       inputs.nixvim-flake.packages.${system}.default
       # wm river utils
-      kitty swaylock fuzzel playerctl
+      kitty swaylock fuzzel playerctl brightnessctl
       # dev tools
       gitu
       # music
diff --git a/home-manager/wm/river.nix b/home-manager/wm/river.nix
index d530438..d02928e 100644
--- a/home-manager/wm/river.nix
+++ b/home-manager/wm/river.nix
@@ -83,6 +83,9 @@ in
           "None XF86Tools" = "spawn 'playerctl previous'";
           "None XF86Keyboard" = "spawn 'playerctl next'";
           "None XF86Favorites" = "spawn 'cmus-remote -C player-next-album'";
+          # screen backlight brightness control
+          "None XF86MonBrightnessDown" = "spawn 'brightnessctl set 1%-'";
+          "None XF86MonBrightnessUp" = "spawn 'brightnessctl set 1%+'";
         };
       };
       map-pointer = {