diff --git a/src/java.base/share/classes/java/util/IllegalFormatException.java b/src/java.base/share/classes/java/util/IllegalFormatException.java
index f5be4ad268b..6c07e129455 100644
--- a/src/java.base/share/classes/java/util/IllegalFormatException.java
+++ b/src/java.base/share/classes/java/util/IllegalFormatException.java
@@ -31,6 +31,7 @@ package java.util;
  * explicit subtypes of this exception which correspond to specific errors
  * should be instantiated.
  *
+ * @sealedGraph
  * @since 1.5
  */
 public sealed class IllegalFormatException extends IllegalArgumentException