diff --git a/docs/concepts/toc.yml b/docs/concepts/toc.yml
index 2f7113d..ccb94a8 100644
--- a/docs/concepts/toc.yml
+++ b/docs/concepts/toc.yml
@@ -29,4 +29,6 @@
 - name: Custom message types
   href: CustomMessages.md
 - name: Creating a location provider for ArcGIS Runtime SDK
-  href: ArcGISRuntime.md
\ No newline at end of file
+  href: ArcGISRuntime.md
+- name: Object Model Diagram
+  href: ../api/omd.html
\ No newline at end of file