--- old/src/java.base/share/classes/java/time/temporal/ValueRange.java	2019-08-27 17:28:45.610324386 -0700
+++ new/src/java.base/share/classes/java/time/temporal/ValueRange.java	2019-08-27 17:28:45.410324386 -0700
@@ -92,6 +92,7 @@
     /**
      * Serialization version.
      */
+    @java.io.Serial
     private static final long serialVersionUID = -7317881728594519368L;
 
     /**
@@ -352,6 +353,7 @@
      *  or the largest minimum is greater than the largest maximum
      * @throws ClassNotFoundException if a class cannot be resolved
      */
+    @java.io.Serial
     private void readObject(ObjectInputStream s)
          throws IOException, ClassNotFoundException, InvalidObjectException
     {