[knot-resolver-users] Can't build 2.1 on Ubuntu 16.04.4 LTS

Greetings. I want to build Knot 2.1 on a Ubuntu 16.04.4 LTS. However, the libknot from the packages is too old: Makefile:87: *** libknot >= 2.6.4 required. Stop. As compared to: libknot-dev/xenial,now 2.1.1-1build1 amd64 [installed] Is it possible to get the libknot package on Ubuntu 16.04.4 LTS updated soon? If not, how do I install the latest libknot by hand? --Paul Hoffman