diff --git a/README.md b/README.md
index d0c5cf1..92e08f6 100644
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+++ b/README.md
@@ -2,6 +2,8 @@
 
 [Bioportal](https://bioportal.bioontology.org/), as a set of knowledge graphs.
 
+See https://kghub.io/kg-bioportal/index.html
+
 ## Data Sources
 
 Source data is derived from the Bioportal API (<https://data.bioontology.org/documentation>).