diff --git a/src/upgrades/3.3.0/chat_room_online_zset.js b/src/upgrades/3.3.0/chat_room_online_zset.js
index 683730662a..0a57076fa0 100644
--- a/src/upgrades/3.3.0/chat_room_online_zset.js
+++ b/src/upgrades/3.3.0/chat_room_online_zset.js
@@ -1,8 +1,6 @@
 'use strict';
 
 
-const _ = require('lodash');
-
 const db = require('../../database');
 const batch = require('../../batch');