upgrade ceph a minor version

Hi
My env: pve:8.1.3 ceph:18.2.1

I have added a new node to my ceph server. When I install ceph from GUI, it installed 18.2.4 and now I see a warning in the GUI
it requests me to upgrade existig nodes to 18.2.4 and restart all OSDs..

how can I upgrade ceph from 18.2.1 -> 18.2.4. this is required for existing cluster members to be the same version with the newly added one!

new node's ceph version: 18.2.4
existing node' version: 18.2.1

I do not want to update the complete PVE but only ceph.