title: How to disable Rails 5 "X-Request-Id" header
body: <p>On Rails 5, all requests includes an unique identifier accessible on application and displayed on HTTP response headers, called "X-Request-Id".</p>
  
  <p>This identifier is very useful for debugging and logging, but I'm having trouble with this in a very old web client.</p>
  
  <p>I tried to clear the header but it did not work.</p>
  
  <pre><code>response.headers['X-Request-Id'] = nil
  </code></pre>
  
  <p>How can I remove this information from headers?</p>