Is the cluster size be able to change for version 4.0 and above

Hello, the aerospike document says that there is a limitation of cluster size for community version, which is 31 for version prior to 4.0, and 8 for version 4.0 and above.
Recently I plan to upgrade my cluster verison from 3.x to 4.x, but there are 30 nodes in the cluster, thus I meet problems when upgrading.
So is the limitation unchangeable for community version?
I notice that aerospike server has a github repo and there are source codes in it, is it possible to change the limitation by re-compile the server?

Aerospike EE currently supports up to 128 nodes. I’d recommend contacting sales.