diff --git a/assets/css/admin-style.css b/assets/css/admin-style.css
index 9bff75670..0be656bd5 100644
--- a/assets/css/admin-style.css
+++ b/assets/css/admin-style.css
@@ -161,3 +161,11 @@ table.matomo-tracking-form th {
     -ms-transform: translateX(1.03em);
     transform: translateX(1.03em);
 }
+
+#toplevel_page_matomo a {
+    position: relative;
+}
+
+#toplevel_page_matomo a.matomo-notification-dot {
+    // TODO
+}
diff --git a/assets/js/admin.js b/assets/js/admin.js
index 38cd113c4..2ed02139e 100644
--- a/assets/js/admin.js
+++ b/assets/js/admin.js
@@ -45,4 +45,15 @@ window.jQuery(document).ready(function ($) {
       });
     });
   }
+
+  // whats new notice dismiss
+  if (typeof mtmWhatsNewNotificationAjax !== undefined && mtmWhatsNewNotificationAjax.ajax_url) {
+      $('body').on('click', '.matomo-whats-new .notice-dismiss', function (e) {
+          $.post(mtmWhatsNewNotificationAjax.ajax_url, {
+              _ajax_nonce: mtmWhatsNewNotificationAjax.nonce,
+              action: 'mtm_dismiss_whats_new',
+              matomo_notification: $(e.target).closest('.matomo-whats-new').data('notification-id'),
+          });
+      });
+  }
 });
diff --git a/classes/WpMatomo/Admin/WhatsNewNotifications.php b/classes/WpMatomo/Admin/WhatsNewNotifications.php
index e66e3355b..fe592b5f7 100644
--- a/classes/WpMatomo/Admin/WhatsNewNotifications.php
+++ b/classes/WpMatomo/Admin/WhatsNewNotifications.php
@@ -52,7 +52,6 @@ public function on_admin_notices() {
 	public function on_admin_enqueue_scripts() {
 		$this->mark_current_page_as_seen();
 
-		// TODO: javascript part
 		wp_localize_script(
 			'matomo-admin-js',
 			'mtmWhatsNewNotificationAjax',
@@ -63,7 +62,7 @@ public function on_admin_enqueue_scripts() {
 		);
 
 		// TODO: javascript part
-		$unseen_notifications = $this->get_unseen_notifications();
+		$unseen_notifications = $this->get_unseen_notification_pages();
 		wp_localize_script(
 			'matomo-admin-js',
 			'mtmUnseenWhatsNewNotifications',
@@ -134,7 +133,7 @@ private function mark_current_page_as_seen() {
 		$this->save_notification_statuses( $statuses );
 	}
 
-	private function get_unseen_notifications() {
+	private function get_unseen_notification_pages() {
 		$matomo_notifications = $this->get_current_notifications();
 		$matomo_statuses      = $this->get_notification_statuses();
 
@@ -144,7 +143,7 @@ private function get_unseen_notifications() {
 			if ( ! isset( $matomo_statuses[ $id ] )
 				|| self::STATUS_UNSEEN === $matomo_statuses[ $id ]
 			) {
-				$matomo_unseen_notifications[] = $id;
+				$matomo_unseen_notifications[] = $notification['notification_marker_page'];
 			}
 		}
 		return $matomo_unseen_notifications;
diff --git a/classes/WpMatomo/Admin/views/whats-new-notifications.php b/classes/WpMatomo/Admin/views/whats-new-notifications.php
index 16fc60b64..6921843d0 100644
--- a/classes/WpMatomo/Admin/views/whats-new-notifications.php
+++ b/classes/WpMatomo/Admin/views/whats-new-notifications.php
@@ -14,7 +14,7 @@
 /** @var int[] $matomo_statuses */
 
 foreach ( $matomo_notifications as $matomo_notification ) { ?>
-<div class="notice notice-info matomo-whats-new is-dismissible">
+<div class="notice notice-info matomo-whats-new is-dismissible" data-notification-id="<?php esc_attr_e( $matomo_notification['id'] ); ?>">
 	<p>
 		<?php
 			// phpcs:disable WordPress.Security.EscapeOutput.OutputNotEscaped