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

@@ -34,10 +34,11 @@
  * @author David Brownell
  */
 public
 class SSLKeyException extends SSLException
 {
+    @java.io.Serial
     private static final long serialVersionUID = -8071664081941937874L;
 
     /**
      * Constructs an exception reporting a key management error
      * found by an SSL subsystem.