How to maintain the UIMA Eclipse update site The Eclipse update site is a composite update site. The top level has subsites for - uimaj sdk - ruta - uima-as The composite update site only needs maintenance if the number of subsites changes. Normally this is not the case. See the uima-eclipse-composite-update-site project's "buildCompositeRepository.xml" for details. As of UIMA V3, there are two composite update sites, supporting the pre-v3 and post-v3 compatible plugins. The POM can be set up to regenerate the composite update site only, or check out an existing one and do modifications (adds/removes). To execute, 1) update the pom and buildCompositeResource.xml for what you want to do *** MAKE SURE TO CHANGE THE target update site - eclipse-update-site or eclipse-update-site-v3 2) cd to this project and run "mvn package -Papache-release" Result will appear in the target directory; if OK upload to the release svn