diff --git a/lib/quo/minitest/helpers.rb b/lib/quo/minitest/helpers.rb
index e5c9e68..ccedf34 100644
--- a/lib/quo/minitest/helpers.rb
+++ b/lib/quo/minitest/helpers.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require "minitest/mock"
+
 require_relative "../testing/collection_backed_fake"
 require_relative "../testing/relation_backed_fake"