Upgrading cluster of 10+ hosts - Can the cluster be mixed versions of 2.2 & 2.3

Hi,

I currently have a cluster of about 10 PoxMox hosts all running v2.2. I want to upgrade them all to v2.3 but can't do them all at the same time. Can a mix of PM hosts (v2.2 and v2.3) live in the same cluster for a few weeks?

Thanks!

-Glen