diff --git a/test/test_helper.rb b/test/test_helper.rb
index a5491ca..8f02761 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -7,6 +7,7 @@
   warn 'simplecov not loaded'
 end
 
+require 'minitest/unit'
 require 'minitest/autorun'
 require 'mocha/minitest'
 require 'webmock/minitest'