diff --git a/samples/angular/MusicStore/package.json b/samples/angular/MusicStore/package.json
index 72e8e2a..1fa631e 100644
--- a/samples/angular/MusicStore/package.json
+++ b/samples/angular/MusicStore/package.json
@@ -13,7 +13,7 @@
     "isomorphic-fetch": "^2.2.1",
     "jquery": "^2.1.4",
     "less": "^2.5.3",
-    "preboot": "^2.0.5",
+    "preboot": "2.0.5",
     "rxjs": "5.0.0-beta.2",
     "systemjs": "^0.19.3",
     "traceur": "0.0.106",