title: Bundler could not find compatible versions for gem "activesupport"
body: <p>I migrated to 3.2.13 version of rails and I am getting this error, how do I get rid of this?</p>
  
  <pre><code>Fetching gem metadata from https://rubygems.org/.......
  Fetching gem metadata from https://rubygems.org/..
  Resolving dependencies...
  Bundler could not find compatible versions for gem "activesupport":
    In snapshot (Gemfile.lock):
      activesupport (3.2.12)
  
    In Gemfile:
      rails (= 3.2.13) ruby depends on
        activesupport (= 3.2.13) ruby
  
  Running `bundle update` will rebuild your snapshot from scratch, using only
  the gems in your Gemfile, which may resolve the conflict.
  </code></pre>
  
  <p>EDIT</p>
  
  <pre><code>sinatra (1.3.6)
    rack (~&gt; 1.4)
    rack-protection (~&gt; 1.3)
    tilt (~&gt; 1.3, &gt;= 1.3.3)
  </code></pre>