diff --git a/Library/Homebrew/dev-cmd/pr-publish.rb b/Library/Homebrew/dev-cmd/pr-publish.rb
index 00ba5ca338..0f4d33735c 100644
--- a/Library/Homebrew/dev-cmd/pr-publish.rb
+++ b/Library/Homebrew/dev-cmd/pr-publish.rb
@@ -2,6 +2,7 @@
 # frozen_string_literal: true
 
 require "abstract_command"
+require "tap"
 require "utils/github"
 
 module Homebrew