diff --git a/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/IntegrationRuntime.json b/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/IntegrationRuntime.json
index 6ad223f6e8cc..f9160780c8b8 100644
--- a/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/IntegrationRuntime.json
+++ b/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/IntegrationRuntime.json
@@ -274,6 +274,10 @@
             "name": "IntegrationRuntimeSsisCatalogPricingTier",
             "modelAsString": true
           }
+        },
+        "dualStandbyPairName": {
+          "description": "The dual standby pair name of Azure-SSIS Integration Runtimes to support SSISDB failover.",
+          "type": "string"
         }
       },
       "additionalProperties": {