diff --git a/package.json b/package.json
index 53c7fab0..4d8d3c6c 100644
--- a/package.json
+++ b/package.json
@@ -66,8 +66,10 @@
     "nsp": "^2.2.0",
     "precommit-hook": "^3.0.0",
     "proxyquire": "^1.7.7",
+    "source-map": "^0.5.6",
     "tap-dot": "1.0.5",
-    "tape": "^4.5.1"
+    "tape": "^4.5.1",
+    "uglify-js": "^2.6.2"
   },
   "pre-commit": [
     "lint",