diff --git a/scripts/npm/package.json b/scripts/npm/package.json
index 2c15f6e5c8..5d09178c86 100644
--- a/scripts/npm/package.json
+++ b/scripts/npm/package.json
@@ -15,7 +15,7 @@
   "dependencies": {
     "angular2": "2.0.0-alpha.<%= ngVersion %>",
     "reflect-metadata": "0.1.0",
-    "rtts_assert": "2.0.0-alpha.<%= ngVersion %>",
+    "rtts_assert": "2.0.0-alpha.37",
     "traceur-runtime": "0.0.59",
     "zone.js": "0.5.4",
     "rx": "2.5.1"