src/java.base/share/classes/java/io/WriteAbortedException.java

@@ -42,10 +42,11 @@
  *
  * @author  unascribed
  * @since   1.1
  */
 public class WriteAbortedException extends ObjectStreamException {
+    @java.io.Serial
     private static final long serialVersionUID = -3326426625597282442L;
 
     /**
      * Exception that was caught while writing the ObjectStream.
      *