After searching the internet, I found the solution to update my moon configuration:
- Edit the original moon.json file
- Generate a new signed configuration file:
zerotier-idtool genmoon moon.json
- Copy the generated file:
cp 000000[network id].moon /var/lib/zerotier-one/moon.d/
- Restart zerotier-one
Wait some time and all your moons and clients are updated.