public function update($options = array()) {
        $options = new Values($options);

        $data = Values::of(array(
            'DialingPermissionsInheritance' => Serialize::booleanToString($options['dialingPermissionsInheritance']),
        ));

        $payload = $this->version->update(
            'POST',
            $this->uri,
            array(),
            $data
        );

        return new SettingsInstance($this->version, $payload);
    }