Lightroom CC wont import heic images

Hi all, I am having no luck importing heic images from my iphone, whether I copy them onto my hard drive first or try from a usb.

It will see them but when I click Review for import, it says "No images that can be imported were found in the selected source, If you are importing from a phone, please make sure it's unlocked"

I'm running free version CC version 4.2

Any suggestions?