-
$ /usr/lib/apt/apt-helper download-file http://debian.sur5r.net/i3/pool/main/s/sur5r-keyring/sur5r-keyring_2018.01.30_all.deb keyring.deb SHA256:baa43dbbd7232ea2b5444cae238d53bebb9d34601cc000e82f11111b1889078a
+$ /usr/lib/apt/apt-helper download-file http://debian.sur5r.net/i3/pool/main/s/sur5r-keyring/sur5r-keyring_2019.02.01_all.deb keyring.deb SHA256:176af52de1a976f103f9809920d80d02411ac5e763f695327de9fa6aff23f416
# dpkg -i ./keyring.deb
# echo "deb http://debian.sur5r.net/i3/ $(grep '^DISTRIB_CODENAME=' /etc/lsb-release | cut -f2 -d=) universe" >> /etc/apt/sources.list.d/sur5r-i3.list
# apt update