Build your CI project with build_parameters "{BUNDLE_UPDATE: true}" and more.
It supports CircleCI and Wercker.
- Click 
 - Open Heroku scheduler 
ex. $ heroku addons:open scheduler --app <App Name> - Add command to Heroku scheduler
- CircleCI: 
$ bundle exec ruby ci-bundle-update.rb - Wercker: 
$ bundle exec ruby ci-bundle-update.rb --ci wercker 
 - CircleCI: 
 
In Japanese
http://masutaka.net/chalow/2015-07-28-1.html
You can use Scheduling a Workflow of CircleCI 2.0. It provides scheduled build like crontab.
💡 So I recommend to use Scheduling a Workflow, not ci-build-trigger.
