diff --git a/package.json b/package.json
index f624582..431b9ea 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
     "debug": "^2.2.0",
     "express": "^4.14.0",
     "jsonwebtoken": "^7.1.9",
-    "mongoose": "^4.6.8",
+    "mongoose": "^5.3.9",
     "morgan": "^1.7.0",
     "passport": "^0.3.2",
     "request": "^2.79.0",