diff --git a/README.md b/README.md
index 31afae6..d1d8a7f 100644
--- a/README.md
+++ b/README.md
@@ -179,3 +179,6 @@ Run the tests with:
 ```bash
 vendor/bin/phpunit
 ```
+
+## Download your copy of the eBook today and become a JavaScript pro
+[![JavaScript: ES2015 to ES2023](https://i.imgur.com/YyCohWc.png)](https://qirolab.gumroad.com/l/javascript-from-es2015-to-es2023)