diff --git a/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/preview/2019-01-01-preview/SecurityInsights.json b/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/preview/2019-01-01-preview/SecurityInsights.json
index b31e37a057d8..b7c7afad2beb 100644
--- a/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/preview/2019-01-01-preview/SecurityInsights.json
+++ b/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/preview/2019-01-01-preview/SecurityInsights.json
@@ -7829,6 +7829,14 @@
           "description": "The uri link of the alert.",
           "readOnly": true,
           "type": "string"
+        },
+        "resourceIdentifiers": {
+          "description": "The list of resource identifiers of the alert.",
+          "items": {
+            "type": "object"
+          },
+          "readOnly": true,
+          "type": "array"
         }
       },
       "type": "object"