diff --git a/Library/Homebrew/official_taps.rb b/Library/Homebrew/official_taps.rb
index f64370a4bec7e7f5e8fb55a852c09d403dc219c4..024dd2a208950ad9b4760f1539c6c52c7e4d27d7 100644
--- a/Library/Homebrew/official_taps.rb
+++ b/Library/Homebrew/official_taps.rb
@@ -8,7 +8,6 @@ OFFICIAL_TAPS = %w[
   php
   science
   tex
-  x11
 ].freeze
 
 OFFICIAL_CMD_TAPS = {