diff --git a/package.json b/package.json
index 5471375..2df8b0a 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
   "repository": "koajs/atomic-session",
   "dependencies": {
     "csrf": "^2.0.2",
-    "mongodb": "^2.0.25",
+    "mongodb": "^3.1.13",
     "mongodb-next": "^0.7.0",
     "ms": "^2.0.0"
   },