src/java.base/share/classes/sun/util/calendar/ZoneInfo.java

*** 161,170 ****
--- 161,171 ----
      /**
       * True if the object has been modified after its instantiation.
       */
      private transient boolean dirty = false;
  
+     @java.io.Serial
      private static final long serialVersionUID = 2653134537216586139L;
  
      /**
       * A constructor.
       */
*** 724,733 ****
--- 725,735 ----
       */
      public static Map<String, String> getAliasTable() {
           return ZoneInfoFile.getAliasMap();
      }
  
+     @java.io.Serial
      private void readObject(ObjectInputStream stream)
              throws IOException, ClassNotFoundException {
          stream.defaultReadObject();
          // We don't know how this object from 1.4.x or earlier has
          // been mutated. So it should always be marked as `dirty'.