diff --git a/index.html b/index.html
index 980ac65..2c9af6c 100644
--- a/index.html
+++ b/index.html
@@ -13,10 +13,10 @@
      <!-- Polyfill(s) for older browsers -->
     <script src="https://cdnjs.cloudflare.com/ajax/libs/es6-shim/0.35.0/es6-shim.min.js"></script>
 
-    <script src="https://npmcdn.com/zone.js@0.6.12?main=browser"></script>
-    <script src="https://npmcdn.com/reflect-metadata@0.1.3"></script>
+    <script src="https://unpkg.com/zone.js@0.6.12?main=browser"></script>
+    <script src="https://unpkg.com/reflect-metadata@0.1.3"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.27/system.js"></script>
-    <script src="https://npmcdn.com/typescript@1.8.10/lib/typescript.js"></script>
+    <script src="https://unpkg.com/typescript@1.8.10/lib/typescript.js"></script>
 
     <!-- 2. Configure SystemJS -->
     <script src="systemjs.config.js"></script>
diff --git a/systemjs.config.js b/systemjs.config.js
index da7fc5f..38ad62c 100644
--- a/systemjs.config.js
+++ b/systemjs.config.js
@@ -5,8 +5,8 @@
   //map tells the System loader where to look for things
   var  map = {
     'app':                        'app', // 'dist',
-    'rxjs':                       'https://npmcdn.com/rxjs@5.0.0-beta.6',
-    'angular2-in-memory-web-api': 'https://npmcdn.com/angular2-in-memory-web-api' // get latest
+    'rxjs':                       'https://unpkg.com/rxjs@5.0.0-beta.6',
+    'angular2-in-memory-web-api': 'https://unpkg.com/angular2-in-memory-web-api' // get latest
   };
 
   //packages tells the System loader how to load when no filename and/or no extension
@@ -28,9 +28,9 @@
       '@angular/upgrade',
   ];
 
-  // add map entries for angular packages in the form '@angular/common': 'https://npmcdn.com/@angular/common@0.0.0-3?main=browser'
+  // add map entries for angular packages in the form '@angular/common': 'https://unpkg.com/@angular/common@0.0.0-3?main=browser'
   packageNames.forEach(function(pkgName) {
-    map[pkgName] = 'https://npmcdn.com/' + pkgName + ngVer;
+    map[pkgName] = 'https://unpkg.com/' + pkgName + ngVer;
   });
 
   // add package entries for angular packages in the form '@angular/common': { main: 'index.js', defaultExtension: 'js' }