diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 5c7ce83bb9b52..569c3592021a2 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -526,7 +526,7 @@ There are three types of assets you can build:
 
 #### Webpack dev server
 
-The dev server by default starts at `http://localhost:9000` and proxies the backend requests to `http://localhost:8080`. It's possible to change these settings:
+The dev server by default starts at `http://localhost:9000` and proxies the backend requests to `http://localhost:8088`. It's possible to change these settings:
 
 ```bash
 # Start the dev server at http://localhost:9000