diff --git a/schemas/2021-06-01-preview/Microsoft.DBforPostgreSQL.json b/schemas/2021-06-01-preview/Microsoft.DBforPostgreSQL.json
index 54cad59bea..63c0a46416 100644
--- a/schemas/2021-06-01-preview/Microsoft.DBforPostgreSQL.json
+++ b/schemas/2021-06-01-preview/Microsoft.DBforPostgreSQL.json
@@ -353,6 +353,10 @@
             }
           ],
           "description": "The HA mode for the server."
+        },
+        "standbyAvailabilityZone": {
+          "type": "string",
+          "description": "availability zone information of the standby."
         }
       },
       "description": "High availability properties of a server"
diff --git a/schemas/2021-06-01/Microsoft.DBforPostgreSQL.json b/schemas/2021-06-01/Microsoft.DBforPostgreSQL.json
index 8ce0f88b80..171e0ad967 100644
--- a/schemas/2021-06-01/Microsoft.DBforPostgreSQL.json
+++ b/schemas/2021-06-01/Microsoft.DBforPostgreSQL.json
@@ -448,6 +448,10 @@
             }
           ],
           "description": "The HA mode for the server."
+        },
+        "standbyAvailabilityZone": {
+          "type": "string",
+          "description": "availability zone information of the standby."
         }
       },
       "description": "High availability properties of a server"