diff --git a/README.md b/README.md
index a53d3f3..91da0d8 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,10 @@ sudo apt install git samba mpd libttspico-utils python3-pip python3-rpi.gpio ngi
 ```
 maybe also: `wiringpi espeak mpc`
 
+wiringpi:  
+http://wiringpi.com/wiringpi-updated-to-2-52-for-the-raspberry-pi-4b/
+
+
 Clone this repo
 
 ```