On servers that use our cPanel licenses, automatic updates are usually disabled. Although you can enable it from WHM. But it is recommended to do update the cPanel to the latest version use manual manner.
First from "Update Preferences" page in WHM set Tier version on desired one. Then Login to SSH with root account and run the cPanel update command:
/scripts/upcp --force
You can do the same from the "Upgrade to Latest Version" page in WHM.
