locomotivecms/engine — pull request #295 by cwoodcox (2012-01-30 22:27:58+00:00)
Title: Upgrade Heroku dependency

Hosting anything Rails 3ish on Heroku requires the new cedar stack, which is largely compatible with v1.x of the gem, but scaling it up or anything like that requires v2.1+. I've migrated to the latest in my own project and it solved my issue, and hasn't caused anything new.