--- old/src/java.base/share/classes/sun/reflect/annotation/EnumConstantNotPresentExceptionProxy.java	2019-08-27 17:29:36.414324386 -0700
+++ new/src/java.base/share/classes/sun/reflect/annotation/EnumConstantNotPresentExceptionProxy.java	2019-08-27 17:29:36.246324386 -0700
@@ -32,6 +32,7 @@
  * @since   1.5
  */
 public class EnumConstantNotPresentExceptionProxy extends ExceptionProxy {
+    @java.io.Serial
     private static final long serialVersionUID = -604662101303187330L;
     final Class<? extends Enum<?>> enumType;
     final String constName;