diff --git a/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2024-05-01-preview/appplatform.json b/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2024-05-01-preview/appplatform.json
index be61e437565b..eb7f4d9e3505 100644
--- a/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2024-05-01-preview/appplatform.json
+++ b/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2024-05-01-preview/appplatform.json
@@ -10997,6 +10997,18 @@
             "name": "PrivateLinkState",
             "modelAsString": true
           }
+        },
+        "privateDnsZoneId": {
+          "description": "Fully qualified resource Id of the Private DNS zone to link with the customer virtual network.",
+          "type": "string",
+          "format": "arm-id",
+          "x-ms-arm-id-details": {
+            "allowedResources": [
+              {
+                "type": "Microsoft.Network/privateDnsZones"
+              }
+            ]
+          }
         }
       }
     },
diff --git a/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2024-05-01-preview/examples/Services_CreateOrUpdate_VNetInjection.json b/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2024-05-01-preview/examples/Services_CreateOrUpdate_VNetInjection.json
index 21e716026e8a..eed165ff7955 100644
--- a/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2024-05-01-preview/examples/Services_CreateOrUpdate_VNetInjection.json
+++ b/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2024-05-01-preview/examples/Services_CreateOrUpdate_VNetInjection.json
@@ -15,7 +15,8 @@
         "vnetAddons": {
           "logStreamPublicEndpoint": true,
           "dataPlanePublicEndpoint": true,
-          "privateLinkState": "Enabled"
+          "privateLinkState": "Enabled",
+          "privateDnsZoneId": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/myResourceGroup/providers/Microsoft.Network/privateDnsZones/myPrivateDnsZone"
         }
       },
       "sku": {
@@ -84,7 +85,8 @@
           "vnetAddons": {
             "logStreamPublicEndpoint": true,
             "dataPlanePublicEndpoint": true,
-            "privateLinkState": "Enabled"
+            "privateLinkState": "Enabled",
+            "privateDnsZoneId": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/myResourceGroup/providers/Microsoft.Network/privateDnsZones/myPrivateDnsZone"
           },
           "serviceId": "12345678abcd1234abcd12345678abcd"
         },
@@ -162,7 +164,8 @@
           "vnetAddons": {
             "logStreamPublicEndpoint": true,
             "dataPlanePublicEndpoint": true,
-            "privateLinkState": "Enabled"
+            "privateLinkState": "Enabled",
+            "privateDnsZoneId": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/myResourceGroup/providers/Microsoft.Network/privateDnsZones/myPrivateDnsZone"
           },
           "serviceId": "12345678abcd1234abcd12345678abcd"
         },
@@ -240,7 +243,8 @@
           "vnetAddons": {
             "logStreamPublicEndpoint": true,
             "dataPlanePublicEndpoint": true,
-            "privateLinkState": "Enabled"
+            "privateLinkState": "Enabled",
+            "privateDnsZoneId": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/myResourceGroup/providers/Microsoft.Network/privateDnsZones/myPrivateDnsZone"
           },
           "serviceId": "12345678abcd1234abcd12345678abcd"
         },