diff --git a/reference/projects.yaml b/reference/projects.yaml
index 2c1d98ee2..2e8d2483d 100644
--- a/reference/projects.yaml
+++ b/reference/projects.yaml
@@ -2313,6 +2313,10 @@ OpenStack Charms:
       release-management: external
       repos:
         - openstack/charm-interface-ceph-mds
+    charm-interface-cinder-backend:
+      release-management: external
+      repos:
+        - openstack/charm-interface-cinder-backend
     charm-interface-dashboard-plugin:
       release-management: external
       repos: