diff --git a/src/main/java/io/v/nutz/data/service/impl/SourceUserServiceImpl.java b/src/main/java/io/v/nutz/data/service/impl/SourceUserServiceImpl.java
index 5ce8c05..002b2b8 100644
--- a/src/main/java/io/v/nutz/data/service/impl/SourceUserServiceImpl.java
+++ b/src/main/java/io/v/nutz/data/service/impl/SourceUserServiceImpl.java
@@ -224,6 +224,7 @@ public class SourceUserServiceImpl extends ViServiceImpl<UserSource> implements
 
 
     @Override
+    @Aop(TransAop.READ_COMMITTED)
     public void dailyScheduledUpdates() {
         pullSourceData(true);
         Date pullTime = (Date) dao().func2(UserSource.class, "max", "pullTime");