diff --git a/README.md b/README.md
index b606d98ea..096b1e7f2 100644
--- a/README.md
+++ b/README.md
@@ -60,7 +60,8 @@ import { IBundler, Bundler } from '@biconomy/bundler'
 
 
 const bundler: IBundler = new Bundler({
-    bundlerUrl: 'https://bundler.biconomy.io/api/v2/80001/nJPK7B3ru.dd7f7861-190d-41bd-af80-6877f74b8f44',     
+    bundlerUrl: 'https://bundler.biconomy.io/api/v2/80001/<API_KEY>', 
+    // Please go to https://dashboard.biconomy.io and generate bundler url     
     chainId: ChainId.POLYGON_MUMBAI,
     entryPointAddress: DEFAULT_ENTRYPOINT_ADDRESS,
   })