diff --git a/validation/td-json-schema-validation.json b/validation/td-json-schema-validation.json
index 02bbc18c..af651792 100644
--- a/validation/td-json-schema-validation.json
+++ b/validation/td-json-schema-validation.json
@@ -1217,6 +1217,9 @@
       "properties": {
         "instance": {
           "type": "string"
+        },
+        "model": {
+          "type": "string"
         }
       },
       "required": ["instance"]