diff --git a/client/es6-shims.js b/client/es6-shims.js
index f20e1bcac2..43abd2ed1a 100644
--- a/client/es6-shims.js
+++ b/client/es6-shims.js
@@ -1 +1,2 @@
 require('object.assign').shim();
+require('es6-map/implement');
diff --git a/package.json b/package.json
index 35bed40eb5..9be7048cbe 100644
--- a/package.json
+++ b/package.json
@@ -36,6 +36,7 @@
     "dedent": "^0.4.0",
     "dotenv": "~0.4.0",
     "errorhandler": "~1.3.0",
+    "es6-map": "^0.1.1",
     "eslint": "^1.1.0",
     "eslint-plugin-react": "^3.2.1",
     "express": "~4.10.4",