diff --git a/specification/appconfiguration/resource-manager/Microsoft.AppConfiguration/preview/2021-10-01-preview/appconfiguration.json b/specification/appconfiguration/resource-manager/Microsoft.AppConfiguration/preview/2021-10-01-preview/appconfiguration.json
index ac65ab17676e..95fddfe5fa28 100644
--- a/specification/appconfiguration/resource-manager/Microsoft.AppConfiguration/preview/2021-10-01-preview/appconfiguration.json
+++ b/specification/appconfiguration/resource-manager/Microsoft.AppConfiguration/preview/2021-10-01-preview/appconfiguration.json
@@ -1437,6 +1437,10 @@
             "name": "PublicNetworkAccess",
             "modelAsString": true
           }
+        },
+        "enablePurgeProtection": {
+          "type": "boolean",
+          "description": "Property specifying whether protection against purge is enabled for this configuration store."
         }
       }
     },