diff --git a/assets/js/index.js b/assets/js/index.js
index 28808a8..1520ad5 100644
--- a/assets/js/index.js
+++ b/assets/js/index.js
@@ -67,6 +67,8 @@ Source:
   var index = new FlexSearch({
     preset: 'score',
     cache: true,
+    async: true,
+    worker: 4,
     doc: {
         id: 'id',
         field: [