diff --git a/package.json b/package.json
old mode 100755
new mode 100644
index cc12bf1..9e03977
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
     "ejs": "^2.5.7",
     "elasticsearch": "^14.0.0",
     "express": "^4.16.2",
-    "mongodb": "^2.2.33",
+    "mongodb": "^3.6.1",
     "mongoose": "^4.13.0",
     "nodemailer": "^4.3.1",
     "nodemon": "^1.18.3",