diff --git a/specification/blueprint/resource-manager/Microsoft.Blueprint/preview/2018-11-01-preview/blueprintDefinition.json b/specification/blueprint/resource-manager/Microsoft.Blueprint/preview/2018-11-01-preview/blueprintDefinition.json
index c0fa224da67f..8e438d1ceedd 100644
--- a/specification/blueprint/resource-manager/Microsoft.Blueprint/preview/2018-11-01-preview/blueprintDefinition.json
+++ b/specification/blueprint/resource-manager/Microsoft.Blueprint/preview/2018-11-01-preview/blueprintDefinition.json
@@ -416,6 +416,15 @@
           },
           {
             "$ref": "#/parameters/PublishedBlueprintVersionIdParameter"
+          },
+          {
+            "name": "publishedBlueprint",
+            "in": "body",
+            "required": false,
+            "schema": {
+              "$ref": "#/definitions/PublishedBlueprint"
+            },
+            "description": "Published Blueprint to create or update."
           }
         ],
         "responses": {