--- old/src/java.base/share/classes/java/lang/Exception.java	2019-08-27 17:27:11.518324386 -0700
+++ new/src/java.base/share/classes/java/lang/Exception.java	2019-08-27 17:27:11.262324386 -0700
@@ -43,6 +43,7 @@
  * @since   1.0
  */
 public class Exception extends Throwable {
+    @java.io.Serial
     static final long serialVersionUID = -3387516993124229948L;
 
     /**