diff --git a/README.md b/README.md
index 418f141..d720294 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ This repository contains documentation, links and example applications.
 A unigi app is built from different layers:
 * **[Headers](https://git.lumen.sh/Fierelier/unigi.headers)** - The functions to be implemented by the Platform
 * **[Platform](#official-platforms)** - Implements the functions from Headers to work on a particular system
-* **...** - Optionally, more layers
+* **...** - Optionally, more layers (Like [unigi.ext](https://git.lumen.sh/Fierelier/unigi.ext))
 * **App** - Your code, uses other layers for input/output. You can find examples in test/\*
 
 # Platforms