diff --git a/stages/org.osbuild.mkdir.meta.json b/stages/org.osbuild.mkdir.meta.json
index 3d303f5b..5534120a 100644
--- a/stages/org.osbuild.mkdir.meta.json
+++ b/stages/org.osbuild.mkdir.meta.json
@@ -52,6 +52,13 @@
           }
         }
       }
+    },
+    "devices": {
+      "type": "object",
+      "additionalProperties": true
+    },
+    "mounts": {
+      "type": "array"
     }
   }
 }