diff --git a/schema/minimalRegistryPerson.json b/schema/minimalRegistryPerson.json
index 2db6308..36b629d 100644
--- a/schema/minimalRegistryPerson.json
+++ b/schema/minimalRegistryPerson.json
@@ -47,6 +47,12 @@
             "type": "string",
             "description": "corresponds to SAML subject-id or pairwise-id and OAuth2 subject attribute"
             },
+        
+        "ePPN": {
+            "type": "string",
+            "description": "eduPersonPrincipalName, but only trustworthy for sites that do NOT reassign ePPNs once they have been assigned to some other person"
+            }
+        
         "dateOfBirth": {
             "type": "string",
             "description": "Date of birth, string representtion of dateOfBirth in Core Attribute Specification"