Manifest.txt in minitest-rg-5.0.0 vs Manifest.txt in minitest-rg-5.1.0

@@ -1,7 +1,8 @@
 .autotest
 .gemtest
 CHANGELOG.rdoc
+Gemfile
 LICENSE
 Manifest.txt
 README.rdoc
 Rakefile
 lib/minitest/rg.rb