Clusters can be upgraded to versions of ClickHouse other than the one your cluster is running.
When upgrading to a ClickHouse Altinity Stable Release, review the release notes for the version that you are upgrading to.
How to Upgrade an Altinity Cloud Cluster
To upgrade a launched cluster:
Select Actions for the cluster to upgrade.
Select the ClickHouse version to upgrade to.
Select Upgrade to start the process.
The upgrade process completion time varies with the size of the cluster, as each server is upgraded individually. This may cause downtime while the cluster is upgraded.