After updating the maven-bundle-plugin from version 2.3.5 to version 2.4.0 running mvn clean install outputs some warning messages, which I don’t fully understand. E.g. Export ch.entwine.weblounge.contentrepository.impl.index, has 1, private references [org.elasticsearch.action.bulk] I guess this has something to do with an embedded lib (elasticsearch). Here are parts of the POM: What does the error message exactly mean? What is the recommended