private function filter_options() {
		$options = static::$options;

		// Remove checkbox options, only after background update complete.
		if ( ! $this->waiting_for_background_update() ) {
			$options = array_filter(
				$options,
				function ( $e ) {
					return '1' !== $e;
				}
			);
		}

		$options = array_merge( $options, $_POST['github_updater'] );

		return $options;
	}