diff --git a/specification/hybridkubernetes/resource-manager/Microsoft.Kubernetes/preview/2024-07-01-preview/connectedClusters.json b/specification/hybridkubernetes/resource-manager/Microsoft.Kubernetes/preview/2024-07-01-preview/connectedClusters.json
index 08ecfbfada9e..101574f6c396 100644
--- a/specification/hybridkubernetes/resource-manager/Microsoft.Kubernetes/preview/2024-07-01-preview/connectedClusters.json
+++ b/specification/hybridkubernetes/resource-manager/Microsoft.Kubernetes/preview/2024-07-01-preview/connectedClusters.json
@@ -918,6 +918,14 @@
         },
         "resourceId": {
           "type": "string",
+          "format": "arm-id",
+          "x-ms-arm-id-details": {
+            "allowedResources": [
+              {
+                "type": "Microsoft.HybridCompute/gateways"
+              }
+            ]
+          },
           "description": "The resource ID of the gateway used for the Arc router feature."
         }
       }