diff --git a/mmorpg_got/package.json b/mmorpg_got/package.json
old mode 100755
new mode 100644
index d8c4a90..dd81be4
--- a/mmorpg_got/package.json
+++ b/mmorpg_got/package.json
@@ -16,6 +16,6 @@
     "express": "^4.14.0",
     "express-session": "^1.15.6",
     "express-validator": "^2.20.8",
-    "mongodb": "^2.2.33"
+    "mongodb": "^3.6.1"
   }
 }