diff --git a/runtime/js/src/main.js b/runtime/js/src/main.js
index 5a108fa23..fd736221e 100644
--- a/runtime/js/src/main.js
+++ b/runtime/js/src/main.js
@@ -7,6 +7,7 @@
 The lightweight framework for web-like apps
 (c) Lea Anthony 2019-present
 */
+/* jshint esversion: 6 */
 import * as Log from './log';
 import { On, Emit, Notify, Heartbeat, Acknowledge } from './events';
 import { NewBinding } from './bindings';
diff --git a/runtime/js/src/utils.js b/runtime/js/src/utils.js
index 6186b399e..5bfba9788 100644
--- a/runtime/js/src/utils.js
+++ b/runtime/js/src/utils.js
@@ -7,6 +7,7 @@
 The lightweight framework for web-like apps
 (c) Lea Anthony 2019-present
 */
+/* jshint esversion: 6 */
 
 import { Emit } from './events';