WordPress released another update lately imagine you need to update 100 sites manually?

I have many websites and most websites are using wordpress, and lately they’ve been updating with newer version forcing me to update my sites in order to protect against bugs, holes, and so on. Now updating manually one site is ok, but I have many, and I’m trying to find a way to update automatically, and I think it can be done, most cpanel and control panel for your webhosting have that feature where you can enable to have it automatically update.