--- a/src/java.base/share/classes/sun/security/timestamp/TSResponse.java	Thu Aug 29 10:09:27 2019 -0700
+++ b/src/java.base/share/classes/sun/security/timestamp/TSResponse.java	Thu Aug 29 10:52:21 2019 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 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
@@ -375,6 +375,7 @@
     }
 
     static final class TimestampException extends IOException {
+        @java.io.Serial
         private static final long serialVersionUID = -1631631794891940953L;
 
         TimestampException(String message) {