diff --git a/package.json b/package.json
index 0f6d7ca..6d54ff6 100644
--- a/package.json
+++ b/package.json
@@ -28,6 +28,7 @@
     "mathjs": "~1.7.0",
     "minimist": "~1.2.0",
     "mocha": "~2.2.5",
+    "moment": "^2.13.0",
     "mongodb": "^2.1.16",
     "parse5": "~2.1.4",
     "request": "~2.57.0",