http://installed-gems.heroku.com/

Gems already installed at Heroku (Updated at 21:25)abstract (1.0.0)actionmailer (2.3.3, 2.3.2, 2.2.2, 2.1.2, 2.1.0, 2.0.2)actionpack (2.3.3, 2.3.2, 2.2.2, 2.1.2, 2.1.0, 2.0.2)activerecord (2.3.3, 2.3.2, 2.2.2, 2.1.0, 2.0.2)activeresource (2.3.3, 2.3.2, 2.2.2, 2.1.0, 2.0.2)activesupport (2.3.3, 2.3.2, 2.2.2, 2.1.2, 2.1.0, 2.0.2)acts_as_ferret (0.4.3)addressable (2.0.2, 2.0.1)aws-s3 (0.6.2)bacon (1.

[zonoise]

最初に確認しておくことかなー。

[Cherenkov]

herokuに入っているgems

[closer]

Herokuにはいってるgems