As posted by a few other users, I went to update and I already had the 13.1 update. Hmm....
FWIW, when I went to the about page I tried to scroll down before I did the update to see the old version number but the dialog popped up, and before I hit OK I saw the version change (just saw it change to 13.1... didn't have time to see what the actual number was before). So it looks like it did what it needed to do before I hit OK and probably just needed a restart to tidy things up.