--- old/src/java.base/share/classes/java/lang/VirtualMachineError.java	2019-08-27 17:27:42.774324386 -0700
+++ new/src/java.base/share/classes/java/lang/VirtualMachineError.java	2019-08-27 17:27:42.582324386 -0700
@@ -34,6 +34,7 @@
  * @since   1.0
  */
 public abstract class VirtualMachineError extends Error {
+    @java.io.Serial
     private static final long serialVersionUID = 4161983926571568670L;
 
     /**