diff --git a/nixos/configuration.nix b/nixos/configuration.nix
index 6c11dee..bf2d34b 100644
--- a/nixos/configuration.nix
+++ b/nixos/configuration.nix
@@ -102,6 +102,7 @@
         xclip
         dmenu
         pulseaudio
+        brightnessctl
     ];
 
     programs.mtr.enable = true;