diff --git a/docs/building_your_site.rst b/docs/building_your_site.rst
index 04c2e2ae5e..7cb2f04a5d 100644
--- a/docs/building_your_site.rst
+++ b/docs/building_your_site.rst
@@ -302,9 +302,15 @@ This is just one possible way of creating a taxonomy for Wagtail objects. With a
 
 
 
-Extended Page Data with ParentalKey
+Page Data Clusters with ParentalKey
 -----------------------------------
 
+The ``django-modelcluster`` module allows for streamlined relation of extra models to a Wagtail page.
+
+
+
+
+