diff --git a/specification/resources/resource-manager/Microsoft.Resources/preview/2023-07-01-preview/changes.json b/specification/resources/resource-manager/Microsoft.Resources/preview/2023-07-01-preview/changes.json
index a2b0cf9b4943..d756aa6a79a8 100644
--- a/specification/resources/resource-manager/Microsoft.Resources/preview/2023-07-01-preview/changes.json
+++ b/specification/resources/resource-manager/Microsoft.Resources/preview/2023-07-01-preview/changes.json
@@ -296,6 +296,11 @@
                 "value": "ManagedIdentity",
                 "description": "A ManagedIdentity made the change(s)",
                 "name": "ManagedIdentity"
+              },
+              {
+                "value": "Unknown",
+                "description": "An Unknown entity made the change(s)",
+                "name": "Unknown"
               }
             ]
           }