Get the latest version directly from Citrix: https://www.citrix.com/downloads/workspace-app/linux/workspace-app-for-linux-latest.html.
Navigator to Debian Packages → Full Packages (Self-Service Support) → Citrix Workspace app for Linux (x86_64)/.
sudo dpkg -i icaclient_19.12.0.19_amd64.deb Selecting previously unselected package icaclient. (Reading database ... 250480 files and directories currently installed.) Preparing to unpack icaclient_19.12.0.19_amd64.deb ... Unpacking icaclient (19.12.0.19) ... Setting up icaclient (19.12.0.19) ... Processing triggers for gnome-menus (3.36.0-1ubuntu1) ... Processing triggers for desktop-file-utils (0.24-1ubuntu2) ... Processing triggers for mime-support (3.64ubuntu1) ...