function genesis_upgrade() {

  // Don't do anything if we're on the latest version.
  if ( genesis_get_db_version() >= PARENT_DB_VERSION ) {
    return;
  }

  global $wp_db_version;

  // If the WP db hasn't been upgraded, make them upgrade first.
  if ( (int) get_option( 'db_version' ) !== (int) $wp_db_version ) {
    wp_safe_redirect( admin_url( 'upgrade.php?_wp_http_referer=' . rawurlencode( wp_unslash( esc_url( $_SERVER['REQUEST_URI'] ) ) ) ) );
    exit;
  }

  $version_map = genesis_get_config( 'update-versions' );

  foreach ( $version_map as $version ) {
    if ( version_compare( genesis_get_db_version(), $version, '<' ) ) {
      $upgrader_class = "\StudioPress\Genesis\Upgrade\Upgrade_DB_{$version}";

      if ( ! class_exists( $upgrader_class ) ) {
        continue;
      }

      $upgrader = new $upgrader_class();

      if ( ! $upgrader instanceof \StudioPress\Genesis\Upgrade\Upgrade_DB_Interface ) {
        continue;
      }

      $upgrader->upgrade();
    }
  }

  // UPDATE DB TO LATEST VERSION.
  if ( genesis_get_db_version() < PARENT_DB_VERSION ) {
    genesis_upgrade_db_latest();
  }

  // Clear the cache to prevent a redirect loop in some object caching environments.
  wp_cache_flush();
  wp_cache_delete( 'alloptions', 'options' );

  
/**
 * Fires after upgrade processes have completed.
 *
 * @since 1.0.1
 */
  do_action( 'genesis_upgrade' );

}