diff --git a/Library/Homebrew/dev-cmd/pr-upload.rb b/Library/Homebrew/dev-cmd/pr-upload.rb
index 8b7f3128b0..a68aebe4da 100644
--- a/Library/Homebrew/dev-cmd/pr-upload.rb
+++ b/Library/Homebrew/dev-cmd/pr-upload.rb
@@ -2,6 +2,7 @@
 # frozen_string_literal: true
 
 require "cli/parser"
+require "formula"
 require "github_packages"
 require "github_releases"