diff --git a/configuration.nix b/configuration.nix
index 5276b29..4a3ca20 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -65,6 +65,10 @@ in {
     passwordFile = config.rekey.secrets.patrick.path;
   };
   users.groups.patrick.gid = 1000;
+  # Allow users in group video to edit backlight setting
+  services.udev.extraRules = ''
+    ACTION=="add", SUBSYSTEM=="backlight", RUN+="${pkgs.coreutils}/bin/chgrp video $sys$devpath/brightness", RUN+="${pkgs.coreutils}/bin/chmod g+w $sys$devpath/brightness"
+  '';
 
   rekey.secrets.root.file = ./secrets/root.passwd.age;
   users.users.root = {
diff --git a/flake.lock b/flake.lock
index cd32bc8..b7dce6f 100644
--- a/flake.lock
+++ b/flake.lock
@@ -188,11 +188,11 @@
       "locked": {
         "lastModified": 1,
         "narHash": "sha256-b3t2blYgmHf/HXc152Fa7+YKJSS05vRnrs8i+H6SWA8=",
-        "path": "/nix/store/drv756dnldki89ms1swdc2f5q5b5286n-source/templates",
+        "path": "/nix/store/30zk66ak2dn422krhrz28igsqz03idia-source/templates",
         "type": "path"
       },
       "original": {
-        "path": "/nix/store/drv756dnldki89ms1swdc2f5q5b5286n-source/templates",
+        "path": "/nix/store/30zk66ak2dn422krhrz28igsqz03idia-source/templates",
         "type": "path"
       }
     },
diff --git a/users/patrick.nix b/users/patrick.nix
index 4455c9b..80951d4 100644
--- a/users/patrick.nix
+++ b/users/patrick.nix
@@ -29,6 +29,7 @@
       arandr
       feh
       xclip
+      acpibacklight
     ];
     sessionVariables = {
       # Firefox touch support