diff --git a/package.json b/package.json
index f3aa98f..995e79c 100644
--- a/package.json
+++ b/package.json
@@ -72,6 +72,7 @@
     "webpack-dev-server": "^1.12.0"
   },
   "dependencies": {
+    "core-js": "^1.2.6",
     "lodash": "^3.10.1",
     "normalize.css": "^3.0.3",
     "react": "^0.14.0",
diff --git a/server.js b/server.js
index a6fbcb0..3004e1c 100644
--- a/server.js
+++ b/server.js
@@ -1,4 +1,5 @@
 /*eslint no-console:0 */
+require('core-js/fn/object/assign');
 var webpack = require('webpack');
 var WebpackDevServer = require('webpack-dev-server');
 var config = require('./webpack.config');
diff --git a/src/components/run.js b/src/components/run.js
index 633e4b8..33370a3 100644
--- a/src/components/run.js
+++ b/src/components/run.js
@@ -1,3 +1,4 @@
+import 'core-js/fn/object/assign';
 import React from 'react';
 import ReactDOM from 'react-dom';
 import App from './Main';
diff --git a/src/config/base.js b/src/config/base.js
new file mode 100644
index 0000000..46049ab
--- /dev/null
+++ b/src/config/base.js
@@ -0,0 +1,6 @@
+'use strict';
+
+
+// Settings configured here will be merged into the final config object.
+export default {
+}
diff --git a/src/config/dev.js b/src/config/dev.js
index 96009da..da33d9e 100644
--- a/src/config/dev.js
+++ b/src/config/dev.js
@@ -1,7 +1,10 @@
 'use strict';
 
-const config = {
+import baseConfig from './base';
+
+
+let config = {
   appEnv: 'dev'  // feel free to remove the appEnv property here
 };
 
-export default config;
+export default Object.freeze(Object.assign({}, baseConfig, config));
diff --git a/src/config/dist.js b/src/config/dist.js
index 10661f6..d944587 100644
--- a/src/config/dist.js
+++ b/src/config/dist.js
@@ -1,7 +1,11 @@
 'use strict';
 
-const config = {
+import baseConfig from './base';
+
+
+let config = {
   appEnv: 'dist'  // feel free to remove the appEnv property here
 };
 
-export default config;
+export default Object.freeze(Object.assign({}, baseConfig, config));
+
diff --git a/src/config/test.js b/src/config/test.js
index d76ca29..2141398 100644
--- a/src/config/test.js
+++ b/src/config/test.js
@@ -1,7 +1,11 @@
 'use strict';
 
-const config = {
+import baseConfig from './base';
+
+
+let config = {
   appEnv: 'test'  // don't remove the appEnv property here
 };
 
-export default config;
+export default Object.freeze(Object.assign(baseConfig, config));
+
diff --git a/test/loadtests.js b/test/loadtests.js
index 68f8af6..416bc13 100644
--- a/test/loadtests.js
+++ b/test/loadtests.js
@@ -1,5 +1,7 @@
 'use strict';
 
+require('core-js/fn/object/assign');
+
 // Add support for all files in the test directory
 const testsContext = require.context('.', true, /(Test\.js$)|(Helper\.js$)/);
 testsContext.keys().forEach(testsContext);