diff --git a/aspnet-core/modules/identity/LINGYUN.Abp.Identity.Domain/LINGYUN/Abp/Identity/Session/IdentitySessionUserInactiveSynchronizer.cs b/aspnet-core/modules/identity/LINGYUN.Abp.Identity.Domain/LINGYUN/Abp/Identity/Session/IdentitySessionUserInactiveSynchronizer.cs
index 8c26cdfb6..022bb26d6 100644
--- a/aspnet-core/modules/identity/LINGYUN.Abp.Identity.Domain/LINGYUN/Abp/Identity/Session/IdentitySessionUserInactiveSynchronizer.cs
+++ b/aspnet-core/modules/identity/LINGYUN.Abp.Identity.Domain/LINGYUN/Abp/Identity/Session/IdentitySessionUserInactiveSynchronizer.cs
@@ -1,4 +1,10 @@
-namespace LINGYUN.Abp.Identity.Session;
+using System.Threading.Tasks;
+using Volo.Abp.DependencyInjection;
+using Volo.Abp.Domain.Entities.Events.Distributed;
+using Volo.Abp.EventBus.Distributed;
+using Volo.Abp.Uow;
+
+namespace LINGYUN.Abp.Identity.Session;
 
 public class IdentitySessionUserInactiveSynchronizer :
     IDistributedEventHandler<EntityCreatedEto<IdentitySessionEto>>,