If you read this thread a few posts back you'll see that the repositories are not working again and 0.0.35 hasn't been imported to it. So if you want to upgrade to 0.0.35 you have to do it manually, and if you can't because you consider it very hard to do just wait for the repositories maintainers to fix them. EDIT: Anyway show us the output of: dpkg -l | grep -i yappari