Comment 9 for bug 1385055

Hi Schlomo,
I think the latest version of hplip is 3.18.7 from August 2018 and can be found here:
https://launchpad.net/ubuntu/+source/hplip/3.18.7+dfsg1-1

There is also the ability to download it directly from HP:
https://developers.hp.com/hp-linux-imaging-and-printing

click "Download HPLIP"
In the drop-down list, pick "Ubuntu"
Or, if you are familiar with tar, there are advanced options at the bottom of that same page for downloading actual files.

Hope this helps
:)
G