How to increase Perm Size for kie-maven-plugin?

Issue

• I get PermGen space OutOfMemoryError while building a kjar with kie-maven-plugin. How can I increase Perm size?

[INFO] --- kie-maven-plugin:6.5.0.Final-redhat-2:build (default-build) @ Drools64Ex001_basic_kjar ---
[INFO] Adding KieModule from resource: FileResource[file=/home/tkobayas/workspaces/workspace900_02131242/Drools64Ex001_basic_kjar/src/main/resources]
[INFO] KieModule was added: FileKieModule[releaseId=com.sample:Drools64Ex001_basic:1.0.0-SNAPSHOT,file=/home/tkobayas/workspaces/workspace900_02131242/Drools64Ex001_basic_kjar/src/main/resources]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 01:21 min
[INFO] Finished at: 2018-06-29T16:43:05+09:00
[INFO] Final Memory: 56M/4372M
[INFO] ------------------------------------------------------------------------
[ERROR] PermGen space -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/OutOfMemoryError