Spatie Sluggable - unexpected 'SlugOptions'

I'm using the Laravel Sluggable package from Spatie. This is not the first the time i use this package and i did the same setup as always. The only thing that's different is that now i'm using php 7.4.

I can not understand why is the following returned. I'm surely defining and returning that variable and function.

syntax error, unexpected 'SlugOptions' (T_STRING), expecting function (T_FUNCTION) or const (T_CONST)

I implemented the HasSlug trait in my Page model:

<?php

namespace App\Models;

use Spatie\Sluggable\HasSlug;
use Spatie\Sluggable\SlugOptions;
use Illuminate\Database\Eloquent\Model;

class Page extends Model
{
    use HasSlug;

And defined the required abstract method:

    public function getSlugOptions() : SlugOptions
    {
        return SlugOptions::create()
            ->generateSlugsFrom('name')
            ->saveSlugsTo('slug')
            ->slugsShouldBeNoLongerThan(50);
    }

Seems like a php 7.4 related thing: github similar issue

But if I revert my php version to php 7.3, the package requires me 7.4:

    - spatie/laravel-sluggable 2.3.0 requires php ^7.4 -> your PHP version (7.3.12) does not satisfy that requirement.