diff --git a/README.md b/README.md
index 80ac2476..3b4ff096 100644
--- a/README.md
+++ b/README.md
@@ -19,6 +19,10 @@ In your `head` tag, include the following code:
 $ npm install --save dat.gui
 ```
 
+```bash
+$ npm install --save-dev @types/dat.gui
+```
+
 ```js
 // CommonJS:
 const dat = require('dat.gui');