Bonjour, I would be interested in a workaround until this is fixed. I suppose the http://builder.libguestfs.org/debian-10.xz archive should be upgraded? Cheers Steps to reproduce: $ virt-builder --version virt-builder 1.40.2 $ virt-builder debian-10 --install sudo [ 1.4] Downloading: http://builder.libguestfs.org/debian-10.xz [ 2.0] Planning how to build this image [ 2.0] Uncompressing [ 6.4] Opening the new disk [ 9.3] Setting a random seed virt-builder: warning: random seed could not be set for this type of guest [ 9.3] Installing packages: sudo Get:1 http://security.debian.org/debian-security buster/updates InRelease [65.4 kB] Get:2 http://deb.debian.org/debian buster InRelease [122 kB] Get:3 http://deb.debian.org/debian buster-updates InRelease [51.9 kB] Reading package lists... E: Repository 'http://security.debian.org/debian-security buster/updates InRelease' changed its 'Suite' value from 'stable' to 'oldstable' E: Repository 'http://deb.debian.org/debian buster InRelease' changed its 'Suite' value from 'stable' to 'oldstable' E: Repository 'http://deb.debian.org/debian buster-updates InRelease' changed its 'Suite' value from 'stable-updates' to 'oldstable-updates' Reading package lists... Building dependency tree... Reading state information... The following NEW packages will be installed: sudo 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. Need to get 1245 kB of archives. After this operation, 3886 kB of additional disk space will be used. Err:1 http://deb.debian.org/debian buster/main amd64 sudo amd64 1.8.27-1 404 Not Found [IP: 199.232.178.132 80] E: Failed to fetch http://deb.debian.org/debian/pool/main/s/sudo/sudo_1.8.27-1_amd64.deb 404 Not Found [IP: 199.232.178.132 80] E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing? virt-builder: error: export DEBIAN_FRONTEND=noninteractive apt_opts='-q -y -o Dpkg::Options::=--force-confnew' apt-get $apt_opts update apt-get $apt_opts install 'sudo' : command exited with an error If reporting bugs, run virt-builder with debugging enabled and include the complete output: virt-builder -v -x [...] -- Loïc Dachary, Artisan Logiciel Libre