What we did to upgrade a small Rails app from Rails 4.2.5 to Rails 5.0.0.beta1. Now the upgrade is deployed in AWS, here is where we are at: When deploying, remember to change the secret key base to invalidate all sessions. ( or your users will get a nasty 500 error ) Temporarily removed NewRelic from the gemfile – it doesn’t currently support Rails 5.0.0.beta1. (UPDATE: as of 11 Feb NewRelic supports Rails 5. ... Read more

Here is the process we went through to get our tests passing after upgrading our Rails app from Rails 4.1 to Rails 4.2.0.beta2. We updated the rails gem version and ran bundle update, and found these gems needed to be upgraded to resolve dependencies: gem 'rspec-rails', '~> 2.14.1' upgraded to '~> 3.1.0' gem 'rspec', '~> 2.14.1' upgraded to '~> 3.1.0' gem 'sass-rails', '>= 3.2' upgraded to '>= 5.0.0.beta1' gem 'bootstrap-sass', '~> 3. ... Read more