-<pre><tt># echo 'deb http://dl.bintray.com/i3/i3-autobuild sid main' > /etc/apt/sources.list.d/i3-autobuild.list\r
-# apt-get update\r
-# apt-get --allow-unauthenticated install i3-autobuild-keyring\r
-# apt-get update\r
-# apt-get install i3</tt></pre>\r
+<pre><tt>$ /usr/lib/apt/apt-helper download-file http://dl.bintray.com/i3/i3-autobuild/pool/main/i/i3-autobuild-keyring/i3-autobuild-keyring_2016.10.01_all.deb keyring.deb SHA256:460e8c7f67a6ae7c3996cc8a5915548fe2fee9637b1653353ec62b954978d844\r
+# apt install ./keyring.deb\r
+# echo 'deb http://dl.bintray.com/i3/i3-autobuild sid main' > /etc/apt/sources.list.d/i3-autobuild.list\r
+# apt update\r
+# apt install i3</tt></pre>\r