Question commands.yml how to block /bukkit:about

Hey im trying to block all commands without plugins and in the commandy.yml i made it like this:
command-block-overrides: []
aliases:
icanhasbukkit: []
pl: []
plugins: []
help: []
'?': []
ver: []
version: []
me: []
about: []
bukkit:about: []

it works fine but the bukkit:about wont get blocked i already tryed it with "bukkit:about" and with 'bukkit:about'

but none of it works can anyone help? im on spigot ver 1.8.8