src/java.base/share/classes/java/lang/Byte.java

@@ -559,7 +559,8 @@
      * @since 1.8
      */
     public static final int BYTES = SIZE / Byte.SIZE;
 
     /** use serialVersionUID from JDK 1.1. for interoperability */
+    @java.io.Serial
     private static final long serialVersionUID = -7183698231559129828L;
 }