diff --git a/specification/datafactory/resource-manager/Microsoft.DataFactory/DataFactory/stable/2018-06-01/entityTypes/LinkedService.json b/specification/datafactory/resource-manager/Microsoft.DataFactory/DataFactory/stable/2018-06-01/entityTypes/LinkedService.json
index e5c3259019bc..da3b833c9388 100644
--- a/specification/datafactory/resource-manager/Microsoft.DataFactory/DataFactory/stable/2018-06-01/entityTypes/LinkedService.json
+++ b/specification/datafactory/resource-manager/Microsoft.DataFactory/DataFactory/stable/2018-06-01/entityTypes/LinkedService.json
@@ -7398,6 +7398,19 @@
           "x-ms-format": "dfe-string",
           "description": "The resource group where the cluster belongs. Type: string (or Expression with resultType string)."
         },
+        "clusterResourceGroupAuthType": {
+          "description": "HDInsight On-demand cluster resource group authentication type.",
+          "type": "string",
+          "enum": [
+            "ServicePrincipalKey",
+            "SystemAssignedManagedIdentity",
+            "UserAssignedManagedIdentity"
+          ],
+          "x-ms-enum": {
+            "name": "HDInsightOndemandClusterResourceGroupAuthenticationType",
+            "modelAsString": true
+          }
+        },
         "clusterNamePrefix": {
           "type": "object",
           "x-ms-format": "dfe-string",
diff --git a/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/LinkedService.json b/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/LinkedService.json
index 88087eca442e..75542268146a 100644
--- a/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/LinkedService.json
+++ b/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/LinkedService.json
@@ -6742,6 +6742,19 @@
           "type": "object",
           "description": "The resource group where the cluster belongs. Type: string (or Expression with resultType string)."
         },
+        "clusterResourceGroupAuthType": {
+          "description": "HDInsight On-demand cluster resource group authentication type.",
+          "type": "string",
+          "enum": [
+            "ServicePrincipalKey",
+            "SystemAssignedManagedIdentity",
+            "UserAssignedManagedIdentity"
+          ],
+          "x-ms-enum": {
+            "name": "HDInsightOndemandClusterResourceGroupAuthenticationType",
+            "modelAsString": true
+          }
+        },
         "clusterNamePrefix": {
           "type": "object",
           "description": "The prefix of cluster name, postfix will be distinct with timestamp. Type: string (or Expression with resultType string)."