--- a/src/java.base/share/classes/java/util/jar/JarVerifier.java	Thu Aug 29 18:52:30 2019 -0400
+++ b/src/java.base/share/classes/java/util/jar/JarVerifier.java	Thu Aug 29 16:31:34 2019 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 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
@@ -584,6 +584,7 @@
      * signing data that can be compared by object reference identity.
      */
     private static class VerifierCodeSource extends CodeSource {
+        @java.io.Serial
         private static final long serialVersionUID = -9047366145967768825L;
 
         URL vlocation;