The ~> operator is the only one you should really use in your Gemfile version strings. Never >= See this post by yehuda katz (bundle developer): http://yehudak

The ~> operator is the only one you should really use in your Gemfile version strings. Never >= See this post by yehuda katz (bundle developer): http://yehudakatz.com/2010/08/21/using-considered-harmful-or-whats-wrong-with/ http://yehudakatz.com/2010/08/21/using-considered-harmful-or... You can actually use `bundle update` pretty safely with judicious use of ~>