diff --git a/package.json b/package.json
old mode 100755
new mode 100644
index f6108d7..ccb8073
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "express": "^4.13.3",
     "express-session": "^1.13.0",
     "jshint": "^2.9.1-rc2",
-    "mongoose": "^4.3.4"
+    "mongoose": "^5.9.18"
   },
   "devDependencies": {
     "grunt": "^1.0.1",