Release : 9.x, 10.0
Component : API GATEWAY
Having a Hazelcast enterprise license with the rolling upgrade feature enables you to perform a rolling upgrade to the next minor version, so you can upgrade for example from 3.8.3 to 3.9.1 but you still cannot upgrade directly from 3.8.x to 3.11.y. You have to either restart the cluster or make each next-minor-version rolling upgrade (3.8 to 3.9, then to 3.10 etc) to avoid downtime.
Please refer to the below documentation on Hazelcast rolling upgrade:
Refer to: Rolling Upgrade by Minor Version (Enterprise Only)