diff --git a/alto/unicorn/schema/registry_schema.yaml b/alto/unicorn/schema/registry_schema.yaml
index 7a317c4..199b9b6 100644
--- a/alto/unicorn/schema/registry_schema.yaml
+++ b/alto/unicorn/schema/registry_schema.yaml
@@ -19,7 +19,7 @@ properties:
   hosts:
     id: "/properties/hosts"
     type: array
-    minItems: 1
+    minItems: 0
     uniqueItems: true
     items:
       type: object