4.0.0 org.eclipse.ee4j project 2.0.4 org.eclipse yasson 3.0.5 pom Yasson Relocation POM. The artifact has moved to org.eclipse.yasson:yasson. Add org.eclipse.yasson:yasson to your dependencies instead. org.eclipse.yasson yasson The groupId has changed from org.eclipse to org.eclipse.yasson. Update your dependency to org.eclipse.yasson:yasson. org.apache.maven.plugins maven-javadoc-plugin true org.apache.maven.plugins maven-source-plugin true