diff --git a/src/java.base/share/classes/java/time/ZoneId.java b/src/java.base/share/classes/java/time/ZoneId.java
index 14196c160fba5..21c9054761c21 100644
--- a/src/java.base/share/classes/java/time/ZoneId.java
+++ b/src/java.base/share/classes/java/time/ZoneId.java
@@ -174,6 +174,7 @@
  * modelling offset-based IDs. This difference is visible in serialization.
  *
  * @since 1.8
+ * @sealedGraph
  */
 @jdk.internal.ValueBased
 public abstract sealed class ZoneId implements Serializable permits ZoneOffset, ZoneRegion {