How to use in laravel 5.4 local scope in a relation call?

I use in my project laravel 5.4 and have 2 models, first model is Group and second model ist Ticket.

In model Group I have following relation:

public function tickets() {
 return $this->hasMany('App\Models\Ticket', 'group_id');
}

In table tickets (model Ticket) I have a bool field called "open", and the local scope:

public function scopeOpen($query) {
   return $query->where('open', 1);
}

How can I filter now by using this relation like: $group->tickets->open, do I have

via Caner