Can't update to rc.4 on windows

Hi, i’m trying to update my ionic2 to rc.4 (or 5 now) and i can’t, i’m following the Changelog file instructions.
I’m running my node promp on admin mode, i run npm uninstall -g ionic and then npm install -g ionic and it’s still installing the rc.3
What’s wrong?

It was just a problem on my package.json, it has updated now