diff --git a/README.md b/README.md
index eca3056..c90a923 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 [![codecov](https://codecov.io/gh/capeprivacy/cape-js/branch/main/graph/badge.svg?token=faHLjMR1MK)](https://codecov.io/gh/capeprivacy/cape-js) ![build](https://github.com/capeprivacy/cape-js/actions/workflows/test.yml/badge.svg)
 
-The Cape SDK for JavaScript is a library that provides a simple way to interact with the Cape Privacy API. Works in Node.js and the browser.
+The Cape SDK for JavaScript is a library that provides a simple way to interact with the Cape Privacy API. Works in Node.js and the browser. Requires Node.js version 16+.
 
 <details>
   <summary>Table of Contents</summary>