diff --git a/server/web3bcspider/services/factory.js b/server/web3bcspider/services/factory.js
index 343687e..e62b194 100644
--- a/server/web3bcspider/services/factory.js
+++ b/server/web3bcspider/services/factory.js
@@ -24,6 +24,7 @@ async function addSingle(clsName, modName) {
 async function init() {
   await add("BlockChain", 'blockchain');
   add(['PullBcEvent'], 'pull_bcevent');
+  add(['Erc721Refresher'], 'erc721_refresher');
 }
 
 function create(name, session = null) {