diff --git a/README.md b/README.md
index 05f0db7..de1baea 100644
--- a/README.md
+++ b/README.md
@@ -24,6 +24,7 @@ Actually known:
 * websockets: `sudo apt install python3-websockets`
 * ansi2html: `sudo pip3 install ansi2html`
 * gpiozero: `sudo apt install python3-gpiozero`
+* psutil: `sudo apt install python3-psutil`
 
 ### Reommendations
 * take care to set Loglevel for FileLevel = 2 in your MMDVM.ini