Can't update boolean when defined as a property

Hey, I have a vehicle model and resource in my laravel/nova application with a boolean called in_service. In my migration it's defined like this:

$table->boolean('in_service');

In my model I added it as a property and to the fillable array like this:

public bool $in_service;

protected $fillable = [
		'in_service'
]

and using it in the resource like this:

Boolean::make(__('InService'), 'in_service'),

now my problem is that nova won't update the value of the bool as soon as I define it as a property on the model. It works with all other defined properties, but not with the bool one. Does anyone know why? I already tried casting or removing the typing, still, as long as it's defined it won't work.