diff --git a/Controller.php b/Controller.php
index 11bfdd0..030a33f 100644
--- a/Controller.php
+++ b/Controller.php
@@ -56,6 +56,14 @@ class Controller extends ModuleAbstract implements WebInterface
      */
     /* public */ const MODULE_NAME = 'Workflow';
 
+    /**
+     * Module id.
+     *
+     * @var int
+     * @since 1.0.0
+     */
+    /* public */ const MODULE_ID = 1005500000;
+
     /**
      * Providing.
      *