src/java.base/share/classes/java/net/SocketTimeoutException.java

@@ -30,10 +30,11 @@
  *
  * @since   1.4
  */
 
 public class SocketTimeoutException extends java.io.InterruptedIOException {
+    @java.io.Serial
     private static final long serialVersionUID = -8846654841826352300L;
 
     /**
      * Constructs a new SocketTimeoutException with a detail
      * message.