Experimental branch not working?

Its says update on steam so when i press update it w********ill update but when it finishes it just says update now again and acts like i never updated it. any one know how to fix it?

The experimental branch is not very stable, it looks like they’re making a lot of changes today so I think it’s constantly going on and offline and updates are all over the place.

I could be wrong, but I think they’re just making changes.