Laravel migration SQL Server default value as function is inserted as string

Question

I have this migration for a SQL Server where the default value NEWID() is a function, but once the migration is executed, it is inserted as string 'newid()'.

<?php
//...
        Schema::create('event', function (Blueprint $table) {
            $table->string('uuid', 100)->nullable()->default('newid()');
        });

How do I let know the migration to insert the default value as NEWID() and not as 'newid()'?

Otherwise, I have to go ahead and insert the default value manually as NEWID().