src/java.base/share/classes/sun/reflect/annotation/EnumConstantNotPresentExceptionProxy.java

@@ -30,10 +30,11 @@
  *
  * @author  Josh Bloch
  * @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;
 
     public EnumConstantNotPresentExceptionProxy(Class<? extends Enum<?>> enumType,