diff --git a/group_vars/thinkpad.yml b/group_vars/thinkpad.yml
index 2eeb6bb..d8c3682 100644
--- a/group_vars/thinkpad.yml
+++ b/group_vars/thinkpad.yml
@@ -41,11 +41,11 @@ i3_keybindings_extra:
   - keybinding:
     name: darker
     key: XF86MonBrightnessDown
-    exec: --no-startup-id light -U 9
+    exec: --no-startup-id sudo light -U 9
   - keybinding:
     name: lighter
     key: XF86MonBrightnessUp
-    exec: --no-startup-id light -A 6
+    exec: --no-startup-id sudo light -A 6
 
 
 i3_applications: