title: Rails, Installed Gem version and Gemfile.lock version
body: <p>I have a problem.</p>
  
  <p>Gemfile.lock is always committed if bundle is updated.</p>
  
  <p>And today, when I deploy web application, I see this error message, </p>
  
  <pre><code>Could not find jwt-1.5.3 in any of the sources
  </code></pre>
  
  <p><code>jwt-1.5.2</code> is installed in deployed server at shared gem path.</p>
  
  <p>I think bundle install new <code>jwt-1.5.3</code> gem because the specified version (1.5.3) in Gemfile.lock and installed version (1.5.2) is not equal.</p>
  
  <p>Why cannot bundle install jwt gem? </p>
  
  <p>Should bundle install that gem if Could not find jwt-1.5.3? </p>