Upgrade host where vCenter is installed

Hi,

I have 3 hosts managed by vCenter. I have vCenter installed on one of the hosts so I can't upgrade that one. I don't have vMotion as it is an Essentials license so I can't move it to another host temporarily. Is there a way to upgrade the vCenters host without manually copy the VM over to another host and start it up there and upgrade the host and then copy it back over manually!?