diff --git a/schemas/2020-07-01-preview/Microsoft.DBforMySQL.json b/schemas/2020-07-01-preview/Microsoft.DBforMySQL.json
index 6fa308beef..73bdd21974 100644
--- a/schemas/2020-07-01-preview/Microsoft.DBforMySQL.json
+++ b/schemas/2020-07-01-preview/Microsoft.DBforMySQL.json
@@ -458,6 +458,16 @@
       },
       "description": "Maintenance window of a server."
     },
+    "PrivateDnsZoneArguments": {
+      "type": "object",
+      "properties": {
+        "privateDnsZoneArmResourceId": {
+          "type": "string",
+          "description": "private dns zone arm resource id."
+        }
+      },
+      "description": "Private DNS zone arguments of a server"
+    },
     "ServerKeyProperties": {
       "type": "object",
       "properties": {
@@ -569,6 +579,17 @@
           ],
           "description": "Maintenance window of a server."
         },
+        "privateDnsZoneArguments": {
+          "oneOf": [
+            {
+              "$ref": "#/definitions/PrivateDnsZoneArguments"
+            },
+            {
+              "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
+            }
+          ],
+          "description": "Private DNS zone arguments of a server"
+        },
         "replicationRole": {
           "type": "string",
           "description": "The replication role."