diff --git a/package-overrides/npm/angular2@2.0.0-alpha.23.json b/package-overrides/npm/angular2@2.0.0-alpha.23.json
deleted file mode 100644
index 3ecfd9c..0000000
--- a/package-overrides/npm/angular2@2.0.0-alpha.23.json
+++ /dev/null
@@ -1,10 +0,0 @@
-{
-  "format": "es6",
-  "dependencies": {
-    "reflect-metadata": "^0.1.0",
-    "zone.js": "^0.5.0"
-  },
-  "directories": {
-    "lib": "es6/prod"
-  }
-}
diff --git a/package-overrides/npm/angular2@2.0.0-alpha.27.json b/package-overrides/npm/angular2@2.0.0-alpha.27.json
new file mode 100644
index 0000000..dde63e3
--- /dev/null
+++ b/package-overrides/npm/angular2@2.0.0-alpha.27.json
@@ -0,0 +1,7 @@
+{
+  "dependencies": {
+    "reflect-metadata": "^0.1.0",
+    "zone.js": "^0.5.1",
+    "rx": "2.5.1"
+  }
+}