HTTP Gravatar img src (should be HTTPS on HTTPS URLs)

WPMU DEV Dashboard loads the Gravatar image via HTTP instead of HTTPS when wp-admin is HTTPS.

Here's the page's "view source":

<section class="profile-img">
					 <figure>
							<img alt='' src='http://1.gravatar.com/avatar/......' class='avatar avatar-150 photo' height='150' width='150' />							<figcaption>Elite</figcaption>
					 </figure>
					 <a href="https://en.gravatar.com/site/login/" target="_blank">change gravatar</a>
					</section>

I would recommend using src=// so that it loads via HTTP or HTTPS, based on what the page's URL is. The alternative is to load HTTPS all the time.

Please fix.

Thank you.