function genesis_get_theme_version() {

  if ( genesis_is_in_dev_mode() ) {
    return (string) time();
  }

  static $version;

  if ( is_null( $version ) ) {
    if ( defined( 'CHILD_THEME_VERSION' ) && CHILD_THEME_VERSION ) {
      $version = CHILD_THEME_VERSION;
    } else {
      $version = wp_get_theme()->get( 'Version' );
    }
  }

  return $version;

}