apt-rdepends does not show multiarch information

I'm using apt-rdepends on an _amd64_ system with _i386_ as a foreign architecture. But it seems that apt-rdepends loses the architecture information of packages: $ apt-rdepends libgcc1:i386 Reading package lists... Done Building dependency tree Reading state information... Done libgcc1:i386 Depends: gcc-4.9-base (= 4.9-20140406-0ubuntu1) Depends: libc6 (>= 2.2.4) PreDepends: multiarch-support gcc-4.9-base libc6 Depends: libgcc1 libgcc1 Depends: gcc-4.9-base (= 4.9-20140406-0ubuntu1) Depends: libc6 (>= 2.14) PreDepends: multiarch-support multiarch-support Depends: libc6 (>= 2.3.6-2) While apt-cache shows the correct architecture but can't recurse: $ apt-cache depends libgcc1:i386 libgcc1:i386 Depends: gcc-4.9-base:i386 Depends: libc6:i386 PreDepends: multiarch-support:i386 multiarch-support Breaks: Breaks: Breaks: gcc-4.4 Breaks: gcc-4.4:i386 Breaks: Breaks: Replaces: libgcc1 Breaks: libgcc1 Any suggestions on how to recursively retrieve dependencies without losing architecture information?