diff --git a/hippo4j-core/src/main/java/cn/hippo4j/core/executor/ExtensibleThreadPoolExecutor.java b/hippo4j-core/src/main/java/cn/hippo4j/core/executor/ExtensibleThreadPoolExecutor.java
index ac683582..b1b130ef 100644
--- a/hippo4j-core/src/main/java/cn/hippo4j/core/executor/ExtensibleThreadPoolExecutor.java
+++ b/hippo4j-core/src/main/java/cn/hippo4j/core/executor/ExtensibleThreadPoolExecutor.java
@@ -277,7 +277,7 @@ public class ExtensibleThreadPoolExecutor
      * @see RejectedAwarePlugin
      */
     @AllArgsConstructor
-    public static class RejectedAwareHandlerWrapper implements RejectedExecutionHandler {
+    private static class RejectedAwareHandlerWrapper implements RejectedExecutionHandler {
 
         /**
          * thread-pool action aware registry