3.9 Automatic Update Not Working

When I attempt to update automatically to 3.9 by clicking ‘update now’ on the updates page, it takes me briefly to the page where I put in my FTP information, but immediately redirects to the page ‘introducing’ me to 3.8.1, with a message at the top reading “An automated WordPress update has failed to complete – please attempt to update again now.” So, I never get the chance to put in my information, which I believe is why it’s failing.

I’d rather not have to manually update it, so any ideas what the issue could be? Let me know if you need more information.