diff --git a/docs/src/assets/schemas/node-types.schema.json b/docs/src/assets/schemas/node-types.schema.json
index 7ea8a5af..c09609e5 100644
--- a/docs/src/assets/schemas/node-types.schema.json
+++ b/docs/src/assets/schemas/node-types.schema.json
@@ -41,6 +41,9 @@
           "items": {
             "$ref": "#/definitions/NodeType"
           }
+        },
+        "symbol_id": {
+          "type": "integer"
         }
       },
       "oneOf": [
@@ -105,4 +108,4 @@
       }
     }
   }
-}
+}
\ No newline at end of file