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How to run Rails 3 rc on heroku

Heroku is awesome! You can easily run Rails 3 Beta on Heroku without any hacks. But if you want run Rails 3 RC where will be a problem: Rails 3.0.0.rc depends on Bundler 1.0.0.rc but Heroku now supports only Bundler 0.9.26. So you can't run app based on Rails 3.0.0.rc gem easily on Heroku now.