diff --git a/README.rst b/README.rst
index 7c70d800c8..61beaeaa67 100644
--- a/README.rst
+++ b/README.rst
@@ -13,9 +13,10 @@ new Openstack project for containers.
 Architecture
 ------------
 
-There are five different types of objects in the Magnum system:
+There are six different types of objects in the Magnum system:
 
 * Bay: A collection of node objects where work is scheduled
+* BayModel: An object stores template information about the bay which is used to create new bays consistently
 * Node: A baremetal or virtual machine where work executes
 * Pod: A collection of containers running on one physical or virtual machine
 * Service: An abstraction which defines a logical set of pods and a policy by which to access them