diff --git a/threadpool/core/src/main/java/cn/hippo4j/core/executor/plugin/impl/TaskRejectNotifyAlarmPlugin.java b/threadpool/core/src/main/java/cn/hippo4j/core/executor/plugin/impl/TaskRejectNotifyAlarmPlugin.java
index 74801a86d6..6c53a14ffe 100644
--- a/threadpool/core/src/main/java/cn/hippo4j/core/executor/plugin/impl/TaskRejectNotifyAlarmPlugin.java
+++ b/threadpool/core/src/main/java/cn/hippo4j/core/executor/plugin/impl/TaskRejectNotifyAlarmPlugin.java
@@ -21,7 +21,6 @@
 import cn.hippo4j.core.executor.ExtensibleThreadPoolExecutor;
 import cn.hippo4j.core.executor.plugin.RejectedAwarePlugin;
 import cn.hippo4j.threadpool.alarm.api.ThreadPoolCheckAlarm;
-import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
 
 import java.util.Optional;
@@ -38,7 +37,6 @@ public class TaskRejectNotifyAlarmPlugin implements RejectedAwarePlugin {
     /**
      * Thread pool check alarm
      */
-    @NonNull
     private final ThreadPoolCheckAlarm threadPoolCheckAlarm;
 
     /**