Bundler

Thanks to the RubyRogues Episode on Bundler, I learned the best way to use bundler. You want to always use the “pessemistic” version numbers for a handful of reasons. gem 'rails', '~> 3.0.3' gem 'rspec', '~> 2.7.0' This allows the most efficient resolution of gem dependencies (in this case, any version of rails from 3.0.3 up to and not including 3.1, and any version of rspec from 2.7.0 up to and not including 2.8) and the added benefit of allowing you to easily patch everything safely using only bundle update. ...