diff --git a/lib/common/_connect.js b/lib/common/_connect.js
index a268eb0..4567160 100644
--- a/lib/common/_connect.js
+++ b/lib/common/_connect.js
@@ -4,7 +4,7 @@ const { MongoClient, ObjectId } = require('mongodb')
 const Redis = require('redis')
 const fs = require('fs')
 
-const DATABASE_VERSION = 2
+const DATABASE_VERSION = 3
 
 module.exports = function (config) {
   Object.assign(exports, config.common.storage)