diff --git a/openpgp-workshop/index.md b/openpgp-workshop/index.md
index 4a4e523..8e661d7 100644
--- a/openpgp-workshop/index.md
+++ b/openpgp-workshop/index.md
@@ -217,6 +217,8 @@ What are some useful ways we can use OpenPGP:
 
 ## Further Studies
 
+* [keyoxide](https://keyoxide.org/): decentralized tool to create and verify decentralized online identities
+
 * [pass](https://www.passwordstore.org/): Unix based `gpg` password manager
 
 * [OpenPGP for application developers](https://openpgp.dev/book/): Deep dive on OpenPGP