diff --git a/definitions/3.0.0/info.json b/definitions/3.0.0/info.json
index 6c9b70fa..e3f1462a 100644
--- a/definitions/3.0.0/info.json
+++ b/definitions/3.0.0/info.json
@@ -61,6 +61,9 @@
       ]
     }
   },
+  "x":{
+    "$ref": "http://asyncapi.com/extensions/0.1.0/x.json"
+  },
   "example": {
     "$ref": "http://asyncapi.com/examples/3.0.0/info.json"
   },