How to refresh a folder already in darktable when new photos are added?

I am photo documenting a little pet project I have, and when I have progress captured I put those images into a folder named after the project. However, when I run Dark table, the newly added pictures are not there.

The new pictures only appear when I again do Import - Folder..., but I would prefer to just press some refresh button to load new images in that folder. How to do that?