Install lightmorphic-icons

Add this to a Debian or Ubuntu machine once. The address never changes.

sudo curl -fsSLo /usr/share/keyrings/lightmorphic-icons.asc https://lightmorphic-icons.buildmorphic.com/apt/key.asc
echo "deb [signed-by=/usr/share/keyrings/lightmorphic-icons.asc] https://lightmorphic-icons.buildmorphic.com/apt stable main" | sudo tee /etc/apt/sources.list.d/lightmorphic-icons.list
sudo apt update

10 index files, 14.9 KB, updated 2026-09-26.

Paste it once

Open a terminal, paste the three lines above and press Enter. It asks for your password because it changes the system.

Install

Then sudo apt install lightmorphic-icons, or find it in your software centre.

Updates come by themselves

Every new version arrives with your normal system updates. Nothing to check, nothing to download by hand.