No longer shows changelog for non-ubuntu packages when using apt-get

Binary package hint: apt-listchanges

When installing packages using apt-get from a local repository, apt-listchanges prints errors like this:
E: changelog for this version is not (yet) available; try https://launchpad.net/ubuntu/+source/xxx/+changelog

Where "xxx" is the package name. Since these packages aren't from Ubuntu, this isn't too surprising. Unfortunately, it doesn't fall back to looking into the package.

apt-listchanges -a <blah> still works.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: apt-listchanges 2.85.6ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-2.29-generic 2.6.38-rc3
Uname: Linux 2.6.38-2-generic x86_64
Architecture: amd64
Date: Fri Apr 8 13:22:33 2011
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, user)
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
SourcePackage: apt-listchanges
UpgradeStatus: Upgraded to natty on 2011-01-26 (71 days ago)