diff --git a/includes/class-db.php b/includes/class-db.php
index 7b7182a..4b338f8 100644
--- a/includes/class-db.php
+++ b/includes/class-db.php
@@ -40,7 +40,7 @@ public function __construct() {
 	 * Installs & updates the DB tables
 	 */
 	public function update() {
-		if ( self::DB_VERSION !== get_site_option( 'zerospam_db_version' ) ) {
+		if ( self::DB_VERSION !== get_option( 'zerospam_db_version' ) ) {
 			global $wpdb;
 
 			$charset_collate = $wpdb->get_charset_collate();
@@ -77,7 +77,7 @@ public function update() {
 			require_once ABSPATH . 'wp-admin/includes/upgrade.php';
 			dbDelta( $sql );
 
-			update_site_option( 'zerospam_db_version', self::DB_VERSION );
+			update_option( 'zerospam_db_version', self::DB_VERSION );
 		}
 	}
 
diff --git a/readme.txt b/readme.txt
index a4de817..b43e246 100644
--- a/readme.txt
+++ b/readme.txt
@@ -3,7 +3,7 @@ Contributors: bmarshall511
 Tags: protection, firewall, security, spam, spam blocker
 Donate link: https://www.zerospam.org/subscribe/
 Requires at least: 5.2
-Tested up to: 6.5
+Tested up to: 6.5.2
 Requires PHP: 7.4
 Stable tag: 5.5.5
 License: GNU GPLv3
@@ -107,6 +107,10 @@ You can report security bugs through the Patchstack Vulnerability Disclosure Pro
 
 == Changelog ==
 
+= v5.5.6 =
+
+* fix(missing tables): fix for missing tables error on multisites, #377
+
 = v5.5.5 =
 
 * fix(jquery): fix for jquery not found error when jquery is loaded with defer
diff --git a/wordpress-zero-spam.php b/wordpress-zero-spam.php
index b7700d7..55f5b91 100644
--- a/wordpress-zero-spam.php
+++ b/wordpress-zero-spam.php
@@ -13,7 +13,7 @@
  * Plugin Name:       Zero Spam for WordPress
  * Plugin URI:        https://www.highfivery.com/projects/zero-spam/
  * Description:       Tired of all the ineffective WordPress anti-spam & security plugins? Zero Spam for WordPress makes blocking spam &amp; malicious activity a cinch. <strong>Just activate, configure, and say goodbye to spam.</strong>
- * Version:           5.5.5
+ * Version:           5.5.6
  * Requires at least: 5.2
  * Requires PHP:      7.3
  * Author:            Highfivery LLC
@@ -31,7 +31,7 @@
 define( 'ZEROSPAM', __FILE__ );
 define( 'ZEROSPAM_PATH', plugin_dir_path( ZEROSPAM ) );
 define( 'ZEROSPAM_PLUGIN_BASE', plugin_basename( ZEROSPAM ) );
-define( 'ZEROSPAM_VERSION', '5.5.5' );
+define( 'ZEROSPAM_VERSION', '5.5.6' );
 
 if ( defined( 'ZEROSPAM_DEVELOPMENT_URL' ) ) {
 	define( 'ZEROSPAM_URL', ZEROSPAM_DEVELOPMENT_URL );