--- old/src/java.base/share/classes/java/lang/Boolean.java	2019-08-27 17:27:02.130324386 -0700
+++ new/src/java.base/share/classes/java/lang/Boolean.java	2019-08-27 17:27:01.954324386 -0700
@@ -73,6 +73,7 @@
     private final boolean value;
 
     /** use serialVersionUID from JDK 1.0.2 for interoperability */
+    @java.io.Serial
     private static final long serialVersionUID = -3665804199014368530L;
 
     /**