--- a/src/java.base/share/classes/java/security/Identity.java	Thu Aug 29 10:09:27 2019 -0700
+++ b/src/java.base/share/classes/java/security/Identity.java	Thu Aug 29 10:52:21 2019 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1996, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -62,6 +62,7 @@
 public abstract class Identity implements Principal, Serializable {
 
     /** use serialVersionUID from JDK 1.1.x for interoperability */
+    @java.io.Serial
     private static final long serialVersionUID = 3609922007826600659L;
 
     /**