 <p>If you run <code>gem list -d rails</code> you'll get an output similar to this.</p> <pre><code>*** LOCAL GEMS *** rails (3.2.3) Author: David Heinemeier Hansson Homepage: http://www.rubyonrails.org Installed at: /Users/bjedrocha/.rvm/gems/ruby-1.9.3-p194@jwb Full-stack web application framework. </code></pre> <p>Note the <code>installed at</code> directive. The part after the <code>@</code> indicates the gemset. So if you've installed Rails without first creating and switching to a named gemset, chances are that it is installed under the <code>@global</code> gemset (a default for RVM). If this is your case, I would switch into the global gemset and uninstall Rails. Once its uninstalled, you can switch back to your named gemset and it will use the Rails version installed in this gemset</p> <pre><code>rvm use 1.9.3@global gem uninstall rails rvm use 1.9.3@mygemset </code></pre> <p>Hope this helps</p>