diff --git a/mirai-core-api/src/commonMain/kotlin/event/events/stranger.kt b/mirai-core-api/src/commonMain/kotlin/event/events/stranger.kt
index 3fd7df69f..fda01c51e 100644
--- a/mirai-core-api/src/commonMain/kotlin/event/events/stranger.kt
+++ b/mirai-core-api/src/commonMain/kotlin/event/events/stranger.kt
@@ -31,7 +31,7 @@ public data class StrangerAddEvent internal constructor(
  * 陌生人关系改变事件
  *
  */
-public abstract class StrangerRelationChangeEvent(
+public sealed class StrangerRelationChangeEvent(
     public override val stranger: Stranger
 ) : StrangerEvent, Packet, AbstractEvent() {
     /**