diff --git a/package.json b/package.json
index 854e15f8f..e82eb15b0 100644
--- a/package.json
+++ b/package.json
@@ -36,6 +36,6 @@
   },
   "devDependencies": {
     "definition-tester": "0.2.0",
-    "typescript": "https://github.com/Microsoft/TypeScript/tarball/release-1.6"
+    "typescript": "1.6.0-beta"
   }
 }