diff --git a/d2l-hm-constants-behavior.html b/d2l-hm-constants-behavior.html
index 5ad9e2d..917f85c 100644
--- a/d2l-hm-constants-behavior.html
+++ b/d2l-hm-constants-behavior.html
@@ -29,6 +29,10 @@
 			// Parents api sub-domain rels
 			Parents: {
 				allChildren: 'https://parents.api.brightspace.com/rels/all-my-children'
+			},
+			// Folio api sub-domain rels
+			Folio: {
+				folio: 'https://folio.api.brightspace.com/rels/folio'
 			}
 		},
 		HypermediaClasses: {