diff --git a/app/index.html b/app/index.html
index 190adb7c..bff5ac8a 100644
--- a/app/index.html
+++ b/app/index.html
@@ -31,7 +31,12 @@
 
     <script>
       window.assetMap = {
-        testSupport: "{{rootURL}}assets/test-support.js"
+        loader: "{{rootURL}}assets/loader.js",
+        twiddleDeps: "{{rootURL}}assets/twiddle-deps.js",
+        testem: "{{rootURL}}testem.js",
+        testSupport: "{{rootURL}}assets/test-support.js",
+        testSupportCss: "{{rootURL}}assets/test-support.css",
+        testLoader: "{{rootURL}}assets/test-loader.js"
       };
     </script>
 
diff --git a/app/services/ember-cli.js b/app/services/ember-cli.js
index 3df3970d..2b0aceb4 100644
--- a/app/services/ember-cli.js
+++ b/app/services/ember-cli.js
@@ -2,7 +2,6 @@ import Babel from 'babel-core';
 import Path from 'path';
 import HbsPlugin from '../plugins/hbs-plugin';
 import blueprints from '../lib/blueprints';
-import config from '../config/environment';
 import Ember from 'ember';
 import moment from 'moment';
 import _template from "lodash/string/template";
@@ -307,7 +306,7 @@ export default Ember.Service.extend({
 
     let EmberENV = twiddleJSON.EmberENV || {};
     depScriptTags += `<script type="text/javascript">EmberENV = ${JSON.stringify(EmberENV)};</script>`;
-    depScriptTags += `<script type="text/javascript" src="${config.assetsHost}assets/loader.js?${config.APP.version}"></script>`;
+    depScriptTags += `<script type="text/javascript" src="${window.assetMap.loader}"></script>`;
 
     Object.keys(deps).forEach(function(depKey) {
       let dep = deps[depKey];
@@ -322,18 +321,18 @@ export default Ember.Service.extend({
       }
     });
 
-    depScriptTags += `<script type="text/javascript" src="${config.assetsHost}assets/twiddle-deps.js?${config.APP.version}"></script>`;
+    depScriptTags += `<script type="text/javascript" src="${window.assetMap.twiddleDeps}"></script>`;
 
     if (testingEnabled(twiddleJSON)) {
-      const testJSFiles = ['assets/test-loader.js', 'testem.js'];
+      const testJSFiles = ['testLoader', 'testem'];
 
       testJSFiles.forEach(jsFile => {
-        depScriptTags += `<script type="text/javascript" src="${config.assetsHost}${jsFile}?${config.APP.version}"></script>`;
+        depScriptTags += `<script type="text/javascript" src="${window.assetMap[jsFile]}"></script>`;
       });
 
       depScriptTags += `<script type="text/javascript" src="${window.assetMap.testSupport}"></script>`;
 
-      depCssLinkTags += `<link rel="stylesheet" type="text/css" href="${config.assetsHost}assets/test-support.css?${config.APP.version}">`;
+      depCssLinkTags += `<link rel="stylesheet" type="text/css" href="${window.assetMap.testSupportCss}">`;
 
       testStuff += `
         <div id="qunit"></div>
diff --git a/blueprints/twiddle.json b/blueprints/twiddle.json
index af0f2467..0a091fdc 100644
--- a/blueprints/twiddle.json
+++ b/blueprints/twiddle.json
@@ -1,5 +1,5 @@
 {
-  "version": "0.12.0",
+  "version": "0.12.1",
   "EmberENV": {
     "FEATURES": {}
   },
diff --git a/bower.json b/bower.json
index 0bd2c9f1..5f3b042d 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "ember-twiddle",
-  "version": "0.12.0",
+  "version": "0.12.1",
   "dependencies": {
     "ember": "~2.10.2",
     "ember-cli-shims": "0.1.3",
diff --git a/ember-cli-build.js b/ember-cli-build.js
index 191dc430..d65b1997 100644
--- a/ember-cli-build.js
+++ b/ember-cli-build.js
@@ -28,7 +28,7 @@ module.exports = function(defaults) {
       enabled: isProductionLikeBuild,
       prepend: prepend,
       extensions: ['js', 'css', 'png', 'jpg', 'gif', 'map', 'svg', 'eot', 'ttf', 'woff', 'woff2', 'ico'],
-      exclude: ['test-loader', 'test-support.css', 'testem']
+      exclude: []
     },
     codemirror: {
       modes: ['xml', 'javascript', 'handlebars', 'htmlmixed', 'css'],
@@ -156,7 +156,7 @@ module.exports = function(defaults) {
     outputFile: '/assets/twiddle-deps.js'
   });
 
-  return mergeTrees([app.toTree(), twiddleVendorTree, loaderTree, testLoaderTree]);
+  return app.toTree(mergeTrees([twiddleVendorTree, loaderTree, testLoaderTree]));
 };
 
 // This copies code out of ember-cli's blueprints into
diff --git a/package.json b/package.json
index d0111865..64ec5643 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ember-twiddle",
-  "version": "0.12.0",
+  "version": "0.12.1",
   "description": "https://ember-twiddle.com",
   "private": true,
   "directories": {
@@ -14,7 +14,7 @@
   },
   "repository": "https://github.com/ember-cli/ember-twiddle",
   "engines": {
-    "node": ">= 0.12.0"
+    "node": ">= 4"
   },
   "author": "Ember Twiddle Contributors",
   "license": "MIT",
diff --git a/tests/index.html b/tests/index.html
index cdcaf572..1a3dae20 100644
--- a/tests/index.html
+++ b/tests/index.html
@@ -32,7 +32,12 @@
 
     <script>
       window.assetMap = {
-        testSupport: "{{rootURL}}assets/test-support.js"
+        loader: "{{rootURL}}assets/loader.js",
+        twiddleDeps: "{{rootURL}}assets/twiddle-deps.js",
+        testem: "{{rootURL}}testem.js",
+        testSupport: "{{rootURL}}assets/test-support.js",
+        testSupportCss: "{{rootURL}}assets/test-support.css",
+        testLoader: "{{rootURL}}assets/test-loader.js"
       };
     </script>