Keeping your WordPress installation always up-to-date is always a best practice as to protect your WordPress website from any possible hack attempt. 

Though this is always a recommended options, some of the WordPress update may break your plugins and themes if they are not updated to the latest version. 

You can switch it on/off for the Automatic updates based on the the following guide - as always making sure your WordPress installation including all the themes & plugins is always the recommended option.