diff --git a/configuration.nix b/configuration.nix
index 08ba6f3..41757cf 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -258,6 +258,10 @@
   services.tailscale.enable = true;
   services.syncthing.enable = true;
 
+  services.udev.extraRules = ''
+ACTION=="add", SUBSYSTEM=="backlight", GROUP="video", MODE="0660"
+'';
+
   programs.gnupg.agent = {
     enable = true;
     enableSSHSupport = true;