How to set MySensors protocol version

Hi there,

where can I set the serial protocol version for mysensors? I tried the following in configuration.yaml:

mysensors:
    version: '2.3.2'

But this gives me the following error:

2023-03-15 14:51:20.468 ERROR (MainThread) [homeassistant.components.mysensors] The 'mysensors' option near /config/configuration.yaml:1 has been removed, please remove it from your configuration

Any Ideas?
Thanks, Edi