--- old/src/java.base/share/classes/java/util/Currency.java	2019-08-27 17:28:52.394324386 -0700
+++ new/src/java.base/share/classes/java/util/Currency.java	2019-08-27 17:28:52.178324386 -0700
@@ -113,6 +113,7 @@
  */
 public final class Currency implements Serializable {
 
+    @java.io.Serial
     private static final long serialVersionUID = -158308464356906721L;
 
     /**
@@ -661,6 +662,7 @@
     /**
      * Resolves instances being deserialized to a single instance per currency.
      */
+    @java.io.Serial
     private Object readResolve() {
         return getInstance(currencyCode);
     }