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

*** 111,120 ****
--- 111,121 ----
   * @see java.math.BigDecimal
   * @since 1.4
   */
  public final class Currency implements Serializable {
  
+     @java.io.Serial
      private static final long serialVersionUID = -158308464356906721L;
  
      /**
       * ISO 4217 currency code for this currency.
       *
*** 659,668 ****
--- 660,670 ----
      }
  
      /**
       * Resolves instances being deserialized to a single instance per currency.
       */
+     @java.io.Serial
      private Object readResolve() {
          return getInstance(currencyCode);
      }
  
      /**