diff --git a/specification/app/resource-manager/Microsoft.App/preview/2024-08-02-preview/SessionPools.json b/specification/app/resource-manager/Microsoft.App/preview/2024-08-02-preview/SessionPools.json
index d528ede5e481..62095337f49e 100644
--- a/specification/app/resource-manager/Microsoft.App/preview/2024-08-02-preview/SessionPools.json
+++ b/specification/app/resource-manager/Microsoft.App/preview/2024-08-02-preview/SessionPools.json
@@ -404,7 +404,7 @@
       "description": "Session pool private registry credentials.",
       "type": "object",
       "properties": {
-        "registryServer": {
+        "server": {
           "description": "Container registry server.",
           "type": "string"
         },
@@ -415,6 +415,10 @@
         "passwordSecretRef": {
           "description": "The name of the secret that contains the registry login password",
           "type": "string"
+        },
+        "identity": {
+          "description": "A Managed Identity to use to authenticate with Azure Container Registry. For user-assigned identities, use the full user-assigned identity Resource ID. For system-assigned identities, use 'system'",
+          "type": "string"
         }
       }
     },
diff --git a/specification/app/resource-manager/Microsoft.App/preview/2024-08-02-preview/examples/SessionPools_CreateOrUpdate.json b/specification/app/resource-manager/Microsoft.App/preview/2024-08-02-preview/examples/SessionPools_CreateOrUpdate.json
index 25a9fba3fc31..003878890be9 100644
--- a/specification/app/resource-manager/Microsoft.App/preview/2024-08-02-preview/examples/SessionPools_CreateOrUpdate.json
+++ b/specification/app/resource-manager/Microsoft.App/preview/2024-08-02-preview/examples/SessionPools_CreateOrUpdate.json
@@ -88,6 +88,10 @@
             ],
             "ingress": {
               "targetPort": 80
+            },
+            "registryCredentials": {
+              "server": "test.azurecr.io",
+              "identity": "/subscriptions/7a497526-bb8d-4816-9795-db1418a1f977/resourcegroups/test/providers/Microsoft.ManagedIdentity/userAssignedIdentities/testSP"
             }
           },
           "sessionNetworkConfiguration": {
@@ -137,6 +141,10 @@
             ],
             "ingress": {
               "targetPort": 80
+            },
+            "registryCredentials": {
+              "server": "test.azurecr.io",
+              "identity": "/subscriptions/7a497526-bb8d-4816-9795-db1418a1f977/resourcegroups/test/providers/Microsoft.ManagedIdentity/userAssignedIdentities/testSP"
             }
           },
           "sessionNetworkConfiguration": {
diff --git a/specification/app/resource-manager/Microsoft.App/preview/2024-08-02-preview/examples/SessionPools_Get.json b/specification/app/resource-manager/Microsoft.App/preview/2024-08-02-preview/examples/SessionPools_Get.json
index 48273a360c75..087ce2d628dd 100644
--- a/specification/app/resource-manager/Microsoft.App/preview/2024-08-02-preview/examples/SessionPools_Get.json
+++ b/specification/app/resource-manager/Microsoft.App/preview/2024-08-02-preview/examples/SessionPools_Get.json
@@ -47,6 +47,10 @@
             ],
             "ingress": {
               "targetPort": 80
+            },
+            "registryCredentials": {
+              "server": "test.azurecr.io",
+              "identity": "/subscriptions/7a497526-bb8d-4816-9795-db1418a1f977/resourcegroups/test/providers/Microsoft.ManagedIdentity/userAssignedIdentities/testSP"
             }
           },
           "sessionNetworkConfiguration": {