Version Policy: ${UpstreamVersion}+r${SVN_Revision}-${Debian_Revision}+${OSG_Major}p${OSG_Minor}p${OSG_Patch} ie: 0.1.3+r114-1+3p0p0 It means : the it after the Upstream release 0.1.3 and before 0.1.4. and the SVN revision is r114. -1 is Debian Revision, it means the first revision of all Debian Things. +3p0p0 means it is build for work with OSG 3.0: as lintian Warning: maintainer-upload-has-incorrect-version-number, dot is divert to `p'.