diff --git a/README.md b/README.md
index fcb5457..9f9d955 100644
--- a/README.md
+++ b/README.md
@@ -14,6 +14,7 @@ An app to manage requests for music performance streamers to learn new songs.
         TWITCH_CLIENTID=Client ID from dev.twitch.tv
         TWITCH_SECRET=Client Secret from dev.twitch.tv
         SESSION_SECRET=Randomly generated secret
+        YOUTUBE_SECRET=API Key from Google developer console (Youtube Data API v3, from web server)
 
         LOG_LEVEL=INFO