diff --git a/package.json b/package.json
old mode 100755
new mode 100644
index e48f83b..4a4105f
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "concurrently": "^3.5.0",
     "cookie-session": "^1.3.1",
     "express": "^4.15.4",
-    "mongoose": "^4.11.9",
+    "mongoose": "^5.12.3",
     "nodemon": "^1.11.0",
     "passport": "^0.4.0",
     "passport-google-oauth": "^1.0.0",