https://maven.apache.org/plugins/maven-site-plugin/
Release Notes - Maven Site Plugin - Version 4.0.0-M15 ** Dependency upgrade * [MSITE-1008] - Upgrade to Parent 42 and Maven 3.6.3 * [MSITE-1009] - Upgrade plugins and components (in ITs)Please also note for this new major version: https://cwiki.apache.org/confluence/display/MAVEN/Towards+Doxia+2.0.0+Stack
Enjoy, -The Apache Maven team