--- old/src/java.base/share/classes/javax/net/ssl/SSLKeyException.java	2019-08-27 17:29:22.310324386 -0700
+++ new/src/java.base/share/classes/javax/net/ssl/SSLKeyException.java	2019-08-27 17:29:22.126324386 -0700
@@ -36,6 +36,7 @@
 public
 class SSLKeyException extends SSLException
 {
+    @java.io.Serial
     private static final long serialVersionUID = -8071664081941937874L;
 
     /**