diff --git a/Library/Homebrew/official_taps.rb b/Library/Homebrew/official_taps.rb
index eecf8e50ef..75ad096c70 100644
--- a/Library/Homebrew/official_taps.rb
+++ b/Library/Homebrew/official_taps.rb
@@ -7,6 +7,7 @@ OFFICIAL_TAPS = %w[
   emacs
   fuse
   games
+  gui
   nginx
   php
   python