That is because the upstream Debian version changed -- the 1.0.0-1 version was pulled in by the auto-sync bot.
See: http://packages.debian.org/sid/libasio-dev http://packages.debian.org/changelogs/pool/main/a/asio/asio_1.0.0-1/changelog http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=461920 -- Please update to version 2.6 https://bugs.launchpad.net/bugs/202174 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs