diff --git a/specification/recoveryservicessiterecovery/resource-manager/Microsoft.RecoveryServices/stable/2025-02-01/service.json b/specification/recoveryservicessiterecovery/resource-manager/Microsoft.RecoveryServices/stable/2025-02-01/service.json
index 48a84850639f..1f0849a328e2 100644
--- a/specification/recoveryservicessiterecovery/resource-manager/Microsoft.RecoveryServices/stable/2025-02-01/service.json
+++ b/specification/recoveryservicessiterecovery/resource-manager/Microsoft.RecoveryServices/stable/2025-02-01/service.json
@@ -19850,6 +19850,13 @@
           "x-ms-identifiers": [
             "tagName"
           ]
+        },
+        "vmDisks": {
+          "description": "The list of disk update properties.",
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/UpdateDiskInput"
+          }
         }
       },
       "x-ms-discriminator-value": "InMageRcm"