diff --git a/package.json b/package.json
index 2eb7fc9..de359c5 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
   "dependencies": {
     "cookie": "^0.1.2",
     "cors": "^2.5.3",
-    "dateformat": "^1.0.11",
+    "dateformat": "^2.0.0",
     "express": "^4.12.0",
     "express-http-proxy": "^0.3.1",
     "winston": "^0.9.0"