diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
index 99527bbcedd75..8bab15352577a 100644
--- a/CONTRIBUTING.rst
+++ b/CONTRIBUTING.rst
@@ -1253,6 +1253,7 @@ commands:
     yarn run prod
 
     # Starts a web server that manages and updates your assets as you modify them
+    # You'll need to run the webserver in debug mode too: `airflow webserver -d`
     yarn run dev