diff --git a/readme.md b/readme.md
index 2406b9d..dd9eeee 100644
--- a/readme.md
+++ b/readme.md
@@ -14,3 +14,5 @@ Sleutel is an identity directory aims to be the one-stop shop of all authenticat
 * [ ] RADIUS
 * [ ] [IndieAuth](https://indieweb.org/IndieAuth)
 * [ ] Web Key Directory
+* [ ] [libravatar](https://www.libravatar.org/)
+