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

@@ -31,10 +31,11 @@
  * @author  unascribed
  * @since   1.1
  */
 public abstract class ObjectStreamException extends IOException {
 
+    @java.io.Serial
     private static final long serialVersionUID = 7260898174833392607L;
 
     /**
      * Create an ObjectStreamException with the specified argument.
      *