diff --git a/doc/100-outline.md b/doc/100-outline.md
index 2c1cc15..0c3882b 100644
--- a/doc/100-outline.md
+++ b/doc/100-outline.md
@@ -26,6 +26,7 @@
       - Seeed SenseCAP M2
       - Microtik wAP LR9
       - [Rak WisGate Edge Pro](https://www.choovio.com/product/wisgate-edge-pro-rak7289cv2/)
+      - [RAK831](https://store.rakwireless.com/products/rak831-gateway-module?variant=39942881083590) Pi hat
       - [Milesight UG63](https://www.choovio.com/product/ug63-mini-lorawan-gateway/)
       - [Multitech Conduit AP](https://shop.multitech.com/mtcap2-915-042a-poe.html)
       - [Dragino LPS8N](https://parleylabs.com/lps8n-indoor-lorawan-gateway/)