diff --git a/README.md b/README.md
index ce0fafac064..87315039a03 100644
--- a/README.md
+++ b/README.md
@@ -306,6 +306,7 @@ Today, `cosign` has been tested and works against the following registries:
 * Alibaba Cloud Container Registry
 * Red Hat Quay Container Registry 3.6+ / Red Hat quay.io
 * Elastic Container Registry
+* IBM Cloud Container Registry
 
 We aim for wide registry support. To `sign` images in registries which do not yet fully support [OCI media types](https://github.com/sigstore/cosign/blob/main/SPEC.md#object-types), one may need to use `COSIGN_DOCKER_MEDIA_TYPES` to fall back to legacy equivalents. For example:
 ```shell