deppbot

https://github.com/jollygoodcode/deppbot-rubygem

deppbot ensures that your Ruby applications are kept updated, always! Based on your configured schedule, deppbot will run bundle update on your Ruby app and send the result as a Pull Request to GitHub. deppbot will also check your app periodically for any RubyGem vulnerabilities and fix it automagically. As seen on https://github.com/integrations/deppbot, https://stackshare.io/deppbot.