diff --git a/about.md b/about.md
index 5551d20..4788c8d 100644
--- a/about.md
+++ b/about.md
@@ -33,6 +33,7 @@ contributor to [Redis](http://redis.io) and maintainer of [hiredis](https://gith
 
 * [What Rust is it?](http://www.whatrustisit.com/) - Show the current Rust versions and next (planned) release date.
   * [@whatrustisit@botsin.space](https://botsin.space/@whatrustisit) - accompanying Mastodon bot.
+* [#SoundOfTheDay](https://fnordig.de/soundoftheday/) - Always showing the last sound of the day I posted on Mastodon.
 
 ### Older projects