nodejs, jade escape markup

I have an Express app using the default Jade view engine. When I try to render HTML as-is in a <pre> element, it gets rendered as actual DOM elements instead of literal characters.

h1 Code Sample
pre
  code
    <div>some text</div>

Output:

<h1>Code Sample</h1>
<pre>
  <code>
    <div>some text</div>
  </code>
</pre>

How do I escape the HTML so that it gets rendered as follows?

<h1>Code Sample</h1>
<pre>
  <code>
    &lt;div&gt;some text&lt;/div&gt;
  </code>
</pre>