diff --git a/src/wp-includes/html-api/class-wp-html-token.php b/src/wp-includes/html-api/class-wp-html-token.php
index f6edd5235579d..86dd7658cfcee 100644
--- a/src/wp-includes/html-api/class-wp-html-token.php
+++ b/src/wp-includes/html-api/class-wp-html-token.php
@@ -94,4 +94,13 @@ public function __destruct() {
 			call_user_func( $this->on_destroy, $this->bookmark_name );
 		}
 	}
+
+	/**
+	 * Wakeup magic method.
+	 *
+	 * @since 6.4.2
+	 */
+	public function __wakeup() {
+		throw new \LogicException( __CLASS__ . ' should never be unserialized' );
+	}
 }