Hi Phil, Buildomatic allows you to easily change drivers. Place your driver, postgresql-9.4-1212.jdbc42.jar in the buildomatic/conf_source/db/postgresql/jdbc directory.Update <js-install>/buildomatic/default_master.properties from '# maven.jdbc.version=9.2-1002.jdbc4' to maven.jdbc.version=9.4-1212.jdbc4Run a buildomatic command, such as deploy-webapp-pro, the jdbc4 driver will be copied to your application server.For more information see the installation documentation Working With JDBC Drivers