diff --git a/docs/examples/modeling-ant/index.rst b/docs/examples/modeling-ant/index.rst
index eb010344..d0851bc6 100644
--- a/docs/examples/modeling-ant/index.rst
+++ b/docs/examples/modeling-ant/index.rst
@@ -43,5 +43,6 @@ You can download all the resources including the full Dust3D Document from the f
 Turnaround Reference Resource
 ==============================
 #. https://www.antweb.org/
+#. https://drawingdatabase.com/
 
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