Service_call without a timeout

I am trying to upgrade to appdaemon 4.5.x

None of my existing service calls need a timeout, so I would like the default timeout value to be ‘none’ (which I assume does not start a timeout), but setting
appdaemon.internal_function_timeout: None
causes appdaemon not to start - it doesn’t give an error message, just doesn’t do anything :frowning: .

I have tried setting
appdaemon.internal_function_timeout: 0
but that just causes all calls to timeout.

Is there any way to keep the 4.4.2 release behaviour without manually changing all call_service calls?