diff --git a/README.md b/README.md
index e3384f7a..5f10ef8e 100644
--- a/README.md
+++ b/README.md
@@ -84,7 +84,7 @@ your-page.html
 
 ## Development
 This project requires node.js and Grunt to be installed:
-- install [node.js](https://nodejs.org/)
+- install [node.js](https://nodejs.org/) v8.9.4 or higher
 - install [Grunt](http://gruntjs.com/getting-started) from the command line using npm (comes with node.js):
 ```shell
 npm install -g grunt-cli