diff --git a/lib/firmata.js b/lib/firmata.js
index 8027c80..9827666 100644
--- a/lib/firmata.js
+++ b/lib/firmata.js
@@ -1,10 +1,4 @@
 "use strict";
-// Global Environment Dependencies
-/* istanbul ignore if */
-/* jshint -W079 */
-if (!Object.assign || !Map) {
-  require("es6-shim");
-}
 
 // Built-in Dependencies
 var Emitter = require("events").EventEmitter;
diff --git a/package.json b/package.json
index 4d27a11..882e75a 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,6 @@
   },
   "dependencies": {
     "browser-serialport": "latest",
-    "es6-shim": "latest",
     "serialport": "~6.0.4"
   },
   "scripts": {