'How to Accept Payments: Events and Webhooks' - cannot forceUpdate?

$ php artisan tinker

App\User::first();

=> App\User {#670

 id: "1",

 name: "Seb C",

 email: "[email protected]",

 stripe_id: "cus_AZB9R0PznbqlkN",

 stripe_active: "1",

 subscription_end_at: null,

 created_at: "2017-04-29 01:47:28",

 updated_at: "2017-04-29 21:07:37",

}

App\User::first()->forceUpdate(['stripe_id' => 'cus_00000000000000']);

BadMethodCallException with message 'Call to undefined method

Illuminate\Database\Query\Builder::forceUpdate()'