diff --git a/README.md b/README.md
index 9a305e9..c820c44 100644
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@@ -54,6 +54,7 @@ Simple example of implementing ActivityPub.
 * [microstatus](https://github.com/Arkanosis/microstatus) - Mastodon, GNUsocial compatible ActivityPub and OStatus server implementation.
 * [pylodon](https://github.com/rowanlupton/pylodon) - Flask-based ActivityPub server implementation.
 * [dariusk/express-activitypub](https://github.com/dariusk/express-activitypub) - A very simple reference implementation of an ActivityPub server using Express.js.
+* [CommonsPub](https://commonspub.org/) - A generic federated server, written in Elixir.
 
 ## Libraries
 A little help for implementing ActivityPub.