src/java.base/share/classes/java/net/HttpRetryException.java

@@ -35,10 +35,11 @@
  * @author  Michael McMahon
  * @since   1.5
  */
 public
 class HttpRetryException extends IOException {
+    @java.io.Serial
     private static final long serialVersionUID = -9186022286469111381L;
 
     private int responseCode;
     private String location;