diff --git a/schema_clusters.json b/schema_clusters.json
index 87b0485..cd22fc5 100644
--- a/schema_clusters.json
+++ b/schema_clusters.json
@@ -37,7 +37,26 @@
             "type": "string"
           },
           "uuid": {
-            "type": "string"
+            "type": "string",
+          "related": {
+            "type": "object",
+            "additionalProperties": false,
+            "properties": {
+              "dest-uuid": {
+                "type": "string"
+              },
+              "type": {
+                "type": "string"
+              },
+              "tags": {
+                "type": "array",
+                "uniqueItems": true,
+                "items": {
+                  "type": "string"
+                }
+              }
+            }
+          }
           },
           "meta": {
             "type": "object",