src/java.base/share/classes/java/lang/reflect/Proxy.java

@@ -281,10 +281,11 @@
  * @since       1.3
  * @revised 9
  * @spec JPMS
  */
 public class Proxy implements java.io.Serializable {
+    @java.io.Serial
     private static final long serialVersionUID = -2222568056686623797L;
 
     /** parameter types of a proxy class constructor */
     private static final Class<?>[] constructorParams =
         { InvocationHandler.class };