Running testing While trying to upgrade, listbugs was giving a bunch of critical/grave errors. Ran $ aptitude hold on all these packages then did upgrade. One of these packages was dpkg Now after upgrade tried running aptitude unhold dpkg However still... synaptic shows it as 1.17.13 both installed and latest and no upgradation possible https://packages.debian.org/jessie/dpkg shows it as 1.17.23