diff --git a/Library/Contributions/cmd/brew-test-bot.rb b/Library/Contributions/cmd/brew-test-bot.rb
index adcaf3d191..8dc327484e 100755
--- a/Library/Contributions/cmd/brew-test-bot.rb
+++ b/Library/Contributions/cmd/brew-test-bot.rb
@@ -20,6 +20,7 @@
 # --ci-testing-upload: Homebrew CI testing bottle upload.
 
 require 'formula'
+require 'extend/ENV'
 require 'utils'
 require 'date'
 require 'rexml/document'