diff --git a/docs/zkapps/tutorials/04-zkapp-ui-with-react.mdx b/docs/zkapps/tutorials/04-zkapp-ui-with-react.mdx
index d0b856da1..ba4c60efc 100644
--- a/docs/zkapps/tutorials/04-zkapp-ui-with-react.mdx
+++ b/docs/zkapps/tutorials/04-zkapp-ui-with-react.mdx
@@ -176,6 +176,12 @@ The example project has a completed app. The `page.tsx` file is the entry file f
 
 1. Move the `page.tsx` file to your local `04-zkapp-browser-ui/ui/app` directory.
 
+### Setup web workers
+
+The web worker code resides in the `04-zkapp-browser-ui/ui/app/zkappWorker.ts` file. Here, you define the functions that will be executed in the worker thread.
+
+
+
 ### Environment configuration
 
 - In `04-zkapp-browser-ui/ui/app/page.tsx`