diff --git a/ramls/schemas/external/user.json b/ramls/schemas/external/user.json
index 0035e0a0..52737161 100644
--- a/ramls/schemas/external/user.json
+++ b/ramls/schemas/external/user.json
@@ -133,7 +133,7 @@
                 "type": "boolean"
               }
             },
-            "additionalProperties": false
+            "additionalProperties": true
           }
         },
         "preferredContactTypeId": {
@@ -141,7 +141,7 @@
           "type": "string"
         }
       },
-      "additionalProperties": false,
+      "additionalProperties": true,
       "required": [
         "lastName"
       ]
@@ -180,5 +180,5 @@
       "additionalProperties": true
     }
   },
-  "additionalProperties": false
+  "additionalProperties": true
 }