diff --git a/json-graph-schema_v2.json b/json-graph-schema_v2.json
index 9ce7399..0eb85d9 100644
--- a/json-graph-schema_v2.json
+++ b/json-graph-schema_v2.json
@@ -89,10 +89,10 @@
     },
     "node": {
       "type": "object",
+      "additionalProperties": false,
       "properties": {
         "label": { "type": "string" },
-        "metadata": { "type": "object" },
-        "additionalProperties": false
+        "metadata": { "type": "object" }
       }
     },
     "edge": {