diff --git a/README.md b/README.md
index 9de541570d388f7d172b1083ea8b9b8999cf3502..d5c093c266a7758d344d05a12e1f0db26e287055 100644
--- a/README.md
+++ b/README.md
@@ -28,6 +28,7 @@ this line in `/etc/apt/sources.list.d/autoradio.list`:
 
 And then running:
 
+    $ sudo apt-key adv --recv-key 0xC0EAC2F9CE9ED9B0
     $ sudo apt-get update
     $ sudo apt-get install etcd autoradio