src/java.base/share/classes/java/time/temporal/ValueRange.java

@@ -90,10 +90,11 @@
 public final class ValueRange implements Serializable {
 
     /**
      * Serialization version.
      */
+    @java.io.Serial
     private static final long serialVersionUID = -7317881728594519368L;
 
     /**
      * The smallest minimum value.
      */

@@ -350,10 +351,11 @@
      *     the smallest minimum is greater than the smallest maximum,
      *  or the smallest maximum is greater than the largest maximum
      *  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
     {
         s.defaultReadObject();
         if (minSmallest > minLargest) {