diff --git a/core/src/commonMain/kotlin/cn/rdlevel/rdkt/core/events/ReadNarrationEvent.kt b/core/src/commonMain/kotlin/cn/rdlevel/rdkt/core/events/ReadNarrationEvent.kt
index 04ecaa9..d8330f6 100644
--- a/core/src/commonMain/kotlin/cn/rdlevel/rdkt/core/events/ReadNarrationEvent.kt
+++ b/core/src/commonMain/kotlin/cn/rdlevel/rdkt/core/events/ReadNarrationEvent.kt
@@ -19,6 +19,7 @@ public data class ReadNarrationEvent @JvmOverloads constructor(
     /**
      * Represents the category of the narration.
      */
+    @Serializable
     public enum class Category {
         @SerialName("Notification")
         NOTIFICATION,