src/java.base/share/classes/javax/net/ssl/SSLHandshakeException.java

@@ -35,10 +35,11 @@
  * @author David Brownell
  */
 public
 class SSLHandshakeException extends SSLException
 {
+    @java.io.Serial
     private static final long serialVersionUID = -5045881315018326890L;
 
     /**
      * Constructs an exception reporting an error found by
      * an SSL subsystem during handshaking.