Hi all, Currently we have two commons-collections packages in repository. libcommons-collections-java - 2.x release libcommons-collections3-java - 3.x release I browsed the upstream release archive and it looks like the last release from 2.x was in 2002. So in my opinion we should migrate the rdepends to libcommons-collections3-java. AFAIK, 3.x API is backward compatible with 2.x. Let me know your comments. Onkar