diff --git a/README.md b/README.md
index d8c81e0..477d139 100755
--- a/README.md
+++ b/README.md
@@ -94,6 +94,7 @@ Reticulum implements a range of generalised interface types that covers most of
  - GUI interface configuration tool
  - Improving [the manual](https://markqvist.github.io/Reticulum/manual/) with sections specifically for beginners
  - Easy way to share interface configurations, see #19
+ - A portable Reticulum implementation in C, see #21
  - More interface types for even broader compatibility
    - ESP32 devices (ESP-Now, Bluetooth, etc.)
    - More LoRa transceivers