diff --git a/packages/jest-dev-server/README.md b/packages/jest-dev-server/README.md
index 6fbf55ee..e89056bf 100644
--- a/packages/jest-dev-server/README.md
+++ b/packages/jest-dev-server/README.md
@@ -147,6 +147,10 @@ module.exports = {
 }
 ```
 
+## Troubleshooting
+
+ * If using `port` makes the terminal to ask for root password although the port is valid and accessible then use `usePortAction: 'ignore'`.
+ 
 ## License
 
 MIT