Dev Dashboard won't update

I'm getting a message that the dev dashboard needs an update, but it's saying "auto update not possible" and then a link for "more info". When I click on the more info link, it takes me to a page that says "Sorry, you are not allowed to access this page."

I'm on version 4.1.2 and it's telling me to update to 4.2. Please advise on how to fix this issue.

Also, I am logged in as admin when trying this, just in case anyone thinks that's the reason here.