diff --git a/i18n-node/i18n-node.d.ts b/i18n-node/i18n-node.d.ts
index 568228df45..d5703a825d 100644
--- a/i18n-node/i18n-node.d.ts
+++ b/i18n-node/i18n-node.d.ts
@@ -50,6 +50,11 @@ declare namespace i18n {
          * json files prefix
          */
         prefix?: string;
+        
+        /**
+         * object or [obj1, obj2] to bind the i18n api and current locale to - defaults to null
+         */
+        register?: any;
     }
     export interface TranslateOptions {
         phrase: string;