diff --git a/lib/build/web_components.dart b/lib/build/web_components.dart
index c7b6eb0..da8fcde 100644
--- a/lib/build/web_components.dart
+++ b/lib/build/web_components.dart
@@ -49,7 +49,7 @@
 /// A [Transformer] which runs the `initialize` transformer with
 /// some special plugins and also inlines the html imports.
 class WebComponentsTransformer extends Transformer {
-  final Resolvers _resolvers;
+  Resolvers _resolvers;
   TransformOptions options;
 
   WebComponentsTransformer(this.options)
@@ -74,7 +74,8 @@
       var mainScriptTag = doc.querySelector('script[type="$dartType"]');
       var scriptId = uriToAssetId(primaryInput.id,
           mainScriptTag.attributes['src'], logger, mainScriptTag.sourceSpan);
-
+          
+      _resolvers = new Resolvers.fromMock(dart_sdk.mockSdkSources);
       return _resolvers.get(transform, [scriptId]).then((resolver) {
         var newScriptId = new AssetId(scriptId.package,
             '${path.url.withoutExtension(scriptId.path)}.initialize.dart');
diff --git a/pubspec.yaml b/pubspec.yaml
index d268d4e..6d7ab92 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,7 +1,7 @@
 name: web_components
 version: 0.12.0+1
 author: Polymer.dart Authors <web-ui-dev@dartlang.org>
-homepage: https://www.dartlang.org/polymer-dart/
+homepage: https://github.com/dart-lang/web-components/
 description: >
   Polyfills for Shadow DOM, Custom Elements, and HTML Imports.
   Custom Elements let authors define their own elements. Authors associate code