diff --git a/src/reactive/barbican_handlers.py b/src/reactive/barbican_handlers.py
index 60cb97e..99b0451 100644
--- a/src/reactive/barbican_handlers.py
+++ b/src/reactive/barbican_handlers.py
@@ -35,6 +35,7 @@ charm.use_defaults(
     'update-status',
     'upgrade-charm',
     'certificates.available',
+    'cluster.available',
 )