title: why is gem still outdated after bundle update
body: <p>I am working on a gem and it's on github.</p>
  
  <p>When I include the gem in an application, do a capistrano deploy, and (on the server) run:</p>
  
  <pre><code>bundle outdated
  </code></pre>
  
  <p>I see:</p>
  
  <pre><code> * authengine (0.0.1 d8baa49 &gt; 0.0.1 de43dfa)
  </code></pre>
  
  <p>which tells me that a more recent commit is available. Why doesn't the bundle update (part of capistrano deploy) pull the more recent version? There is no version constraint in the Gemfile of the host application, and anyway they have the same version number, just different commits.</p>
  
  <p>Even if I log into the server and run</p>
  
  <pre><code>bundle update authengine
  </code></pre>
  
  <p>I get the same "outdated" result afterwards.<br>
  What am I missing here?</p>