Validación entera no negativa Laravel

namespace Modules\RewardPoint\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;

class UserPointsUpdateRequest extends FormRequest
{

    public function authorize()
    {
        return true;
    }

    public function rules()
    {
        return [
            'points' => 'required|numeric|gt:0'
        ];
    }
}
Sharifur Robin