diff --git a/USERS.md b/USERS.md
index dc3f1cc8e..3be743e0d 100644
--- a/USERS.md
+++ b/USERS.md
@@ -17,6 +17,7 @@ We'd love for you to share your cert-manager story with the world!
 | [<img src="https://www.diagrid.io/_next/static/media/logo.181bad37.svg" width="100" alt="Diagrid"> ](https://diagrid.io) | Securing ingresses and internal workloads | [@diagridio](https://github.com/diagridio) [Blog](https://www.diagrid.io/blog) |
 | [<img src="https://raw.githubusercontent.com/kubernetes-sigs/cluster-api/main/logos/kubernetes-cluster-logos_final-02.svg" alt="Cluster API" width="100"> ](https://cluster-api.sigs.k8s.io/) | Securing webhooks | [The Cluster API Book](https://cluster-api.sigs.k8s.io/) |
 | [<img src="https://cloudogu.com/images/logo.png" alt="Cloudogu Logo" width="100"> ](https://cloudogu.com) | Securing Ingresses | [@cloudogu](https://github.com/cloudogu) [Blog](https://platform.cloudogu.com/en/blog/) |
+| [<img src="https://raw.githubusercontent.com/metal3-io/metal3-docs/main/images/metal3.svg" alt="Metal³" width="100"> ](https://metal3.io/) | Securing webhooks and internal workloads | [metal3.io](https://metal3.io/) |
 
 ## Individuals