diff --git a/schema_clusters.json b/schema_clusters.json
index 9915ef0..372bd41 100644
--- a/schema_clusters.json
+++ b/schema_clusters.json
@@ -36,6 +36,9 @@
           "value": {
             "type": "string"
           },
+          "uuid": {
+            "type": "string"
+          },
           "meta": {
             "type": "object",
             "additionalProperties": true,
@@ -111,7 +114,12 @@
                 "items": {
                   "type": "string"
                 }
-              }
+              },
+              "source-uuid": {
+                "type": "string"
+              },
+              "target-uuid": {
+                "type": "string"
             }
           }
         },