diff --git a/source/structure/r4.sindri.json b/source/structure/r4.sindri.json
index 41b5573..f3ae8db 100644
--- a/source/structure/r4.sindri.json
+++ b/source/structure/r4.sindri.json
@@ -63,6 +63,11 @@
 					"name": "email_address",
 					"type": "string_medium",
 					"nullable": true
+				},
+				{
+					"name": "dav_token",
+					"type": "string_medium",
+					"nullable": true
 				}
 			],
 			"constraints": [