diff --git a/plusone-basic/plusone-basic-domain/src/main/java/xyz/zhouxy/plusone/domain/DomainEvent.java b/plusone-basic/plusone-basic-domain/src/main/java/xyz/zhouxy/plusone/domain/DomainEvent.java
index 34acdda..3cbb914 100644
--- a/plusone-basic/plusone-basic-domain/src/main/java/xyz/zhouxy/plusone/domain/DomainEvent.java
+++ b/plusone-basic/plusone-basic-domain/src/main/java/xyz/zhouxy/plusone/domain/DomainEvent.java
@@ -1,6 +1,7 @@
 package xyz.zhouxy.plusone.domain;
 
-import cn.hutool.core.lang.UUID;
+import java.util.UUID;
+
 import lombok.Getter;
 
 /**
@@ -20,7 +21,7 @@ public abstract class DomainEvent {
     private long happenedAt;
 
     protected DomainEvent() {
-        this.identifier = UUID.randomUUID().toString(true);
+        this.identifier = UUID.randomUUID().toString();
         this.happenedAt = System.currentTimeMillis();
     }
 }