--- a/src/java.base/share/classes/javax/security/auth/DestroyFailedException.java	Thu Aug 29 10:09:27 2019 -0700
+++ b/src/java.base/share/classes/javax/security/auth/DestroyFailedException.java	Thu Aug 29 10:52:21 2019 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 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
@@ -36,6 +36,7 @@
  */
 public class DestroyFailedException extends Exception {
 
+    @java.io.Serial
     private static final long serialVersionUID = -7790152857282749162L;
 
     /**