Additional ResourcesHomeElementsProductsPricingCareersHelpStatusEventsPodcastsCompliance CenterHeroku BlogHeroku Blog Find out what's new with Heroku on our blog. Visit Blog Ruby supports Sprockets 3.0 manifest fileChange effective on 05 May 2015 When deploying a Ruby on Rails site that uses the asset pipeline, the manifest file is used to determine if the assets have been precompiled. If the asse