--- a/src/java.base/share/classes/javax/security/cert/CertificateExpiredException.java	Thu Aug 29 10:09:27 2019 -0700
+++ b/src/java.base/share/classes/javax/security/cert/CertificateExpiredException.java	Thu Aug 29 10:52:21 2019 -0700
@@ -46,6 +46,7 @@
 @Deprecated(since="9", forRemoval=true)
 public class CertificateExpiredException extends CertificateException {
 
+    @java.io.Serial
     private static final long serialVersionUID = 5091601212177261883L;
     /**
      * Constructs a CertificateExpiredException with no detail message. A