Hummingbird insecure content urls

The hummingbird, wpmudev dashboard and probably all WPMUDEV plugins appear to use hardcoded http urls for external resources like fonts and such.

This is causing some of these URLS not to load properly when I am accessing my site via https as you can see here:

http://screencast-o-matic.com/screenshots/u/fObY/1486771528827-7150.png

Wouldn't it be best to use protocol agnostic urls like:

//fonts.gstatic.com/s/opensans/v9/DXI1ORHCpsQm3Vp6mXoaTegdm0LZdjqr5-oayXSOefg.woff2

instead of

http://fonts.gstatic.com/s/opensans/v9/DXI1ORHCpsQm3Vp6mXoaTegdm0LZdjqr5-oayXSOefg.woff2

thanks