src/java.base/share/classes/java/util/IllegalFormatPrecisionException.java

@@ -32,10 +32,11 @@
  *
  * @since 1.5
  */
 public class IllegalFormatPrecisionException extends IllegalFormatException {
 
+    @java.io.Serial
     private static final long serialVersionUID = 18711008L;
 
     private int p;
 
     /**