diff --git a/Library/Homebrew/dev-cmd/vendor-gems.rb b/Library/Homebrew/dev-cmd/vendor-gems.rb
index e9e4c72e97..c4bab263a8 100644
--- a/Library/Homebrew/dev-cmd/vendor-gems.rb
+++ b/Library/Homebrew/dev-cmd/vendor-gems.rb
@@ -2,6 +2,7 @@
 # frozen_string_literal: true
 
 require "abstract_command"
+require "utils/git"
 
 module Homebrew
   module DevCmd