Increasing the page height

I’ve hit a slightly odd problem. I’m mocking up a very long mobile page, and I’ve reached what seems to be the page limit (20,000 px). Is there any way I can make the page longer? Making the prototype shorter isn’t an option.

Hey BH… Is there a reason you couldn’t use multiple pages for your prototype? Use dynamic panels on scroll to simulate a single page by using multiple dynamic panel states? Maybe onScroll x=15000 open link, new page, etc?