diff --git a/day13-signup-form/package.json b/day13-signup-form/package.json
index c61c5ff..f164416 100644
--- a/day13-signup-form/package.json
+++ b/day13-signup-form/package.json
@@ -11,6 +11,6 @@
   "license": "ISC",
   "dependencies": {
     "express": "^4.16.1",
-    "mongodb": "^2.2.30"
+    "mongodb": "^3.6.1"
   }
 }