diff --git a/src/main/java/com/gzzn/omms/msgexchangeapi/scheduled/CminmsgsHisScheduled.java b/src/main/java/com/gzzn/omms/msgexchangeapi/scheduled/CminmsgsHisScheduled.java
index c32b6d35..960d8af2 100644
--- a/src/main/java/com/gzzn/omms/msgexchangeapi/scheduled/CminmsgsHisScheduled.java
+++ b/src/main/java/com/gzzn/omms/msgexchangeapi/scheduled/CminmsgsHisScheduled.java
@@ -2,6 +2,7 @@ package com.gzzn.omms.msgexchangeapi.scheduled;
 
 import java.util.Date;
 import java.util.List;
+import java.util.stream.Collector;
 import java.util.stream.Collectors;
 
 import org.slf4j.Logger;