diff --git a/schemas/config/project.schema.json b/schemas/config/project.schema.json
index 6bca848..5575677 100644
--- a/schemas/config/project.schema.json
+++ b/schemas/config/project.schema.json
@@ -95,6 +95,9 @@
             "defaultLanguage",
             "languages"
           ]
+        },
+        "openapi": {
+          "$ref": "openapi.schema.json"
         }
       }
     },