diff --git a/services/catalog/src/EShopOnAbp.CatalogService.HttpApi.Host/DbMigrations/CatalogServiceDatabaseMigrationEventHandler.cs b/services/catalog/src/EShopOnAbp.CatalogService.HttpApi.Host/DbMigrations/CatalogServiceDatabaseMigrationEventHandler.cs
index 4e1e5310..0ad78438 100644
--- a/services/catalog/src/EShopOnAbp.CatalogService.HttpApi.Host/DbMigrations/CatalogServiceDatabaseMigrationEventHandler.cs
+++ b/services/catalog/src/EShopOnAbp.CatalogService.HttpApi.Host/DbMigrations/CatalogServiceDatabaseMigrationEventHandler.cs
@@ -1,6 +1,5 @@
 using EShopOnAbp.CatalogService.MongoDB;
 using EShopOnAbp.Shared.Hosting.Microservices.DbMigrations.MongoDb;
-using Microsoft.Extensions.Logging;
 using System;
 using System.Threading.Tasks;
 using Serilog;
diff --git a/services/identity/src/EShopOnAbp.IdentityService.HttpApi.Host/DbMigrations/IdentityServiceDatabaseMigrationEventHandler.cs b/services/identity/src/EShopOnAbp.IdentityService.HttpApi.Host/DbMigrations/IdentityServiceDatabaseMigrationEventHandler.cs
index ef9235b2..71c99268 100644
--- a/services/identity/src/EShopOnAbp.IdentityService.HttpApi.Host/DbMigrations/IdentityServiceDatabaseMigrationEventHandler.cs
+++ b/services/identity/src/EShopOnAbp.IdentityService.HttpApi.Host/DbMigrations/IdentityServiceDatabaseMigrationEventHandler.cs
@@ -10,8 +10,6 @@ using Volo.Abp.EventBus.Local;
 using Volo.Abp.Identity;
 using Volo.Abp.MultiTenancy;
 using Volo.Abp.Uow;
-using Medallion.Threading;
-using Microsoft.Extensions.Logging;
 using Volo.Abp.DistributedLocking;
 
 namespace EShopOnAbp.IdentityService.DbMigrations
diff --git a/services/ordering/src/EShopOnAbp.OrderingService.HttpApi.Host/DbMigrations/OrderingServiceDatabaseMigrationEventHandler.cs b/services/ordering/src/EShopOnAbp.OrderingService.HttpApi.Host/DbMigrations/OrderingServiceDatabaseMigrationEventHandler.cs
index f5183f69..b2402578 100644
--- a/services/ordering/src/EShopOnAbp.OrderingService.HttpApi.Host/DbMigrations/OrderingServiceDatabaseMigrationEventHandler.cs
+++ b/services/ordering/src/EShopOnAbp.OrderingService.HttpApi.Host/DbMigrations/OrderingServiceDatabaseMigrationEventHandler.cs
@@ -1,6 +1,5 @@
 using EShopOnAbp.OrderingService.EntityFrameworkCore;
 using EShopOnAbp.Shared.Hosting.Microservices.DbMigrations.EfCore;
-using Microsoft.Extensions.Logging;
 using System;
 using System.Threading.Tasks;
 using Serilog;
diff --git a/services/payment/src/EShopOnAbp.PaymentService.HttpApi.Host/DbMigrations/PaymentServiceDatabaseMigrationEventHandler.cs b/services/payment/src/EShopOnAbp.PaymentService.HttpApi.Host/DbMigrations/PaymentServiceDatabaseMigrationEventHandler.cs
index b330bc7f..2f447e7b 100644
--- a/services/payment/src/EShopOnAbp.PaymentService.HttpApi.Host/DbMigrations/PaymentServiceDatabaseMigrationEventHandler.cs
+++ b/services/payment/src/EShopOnAbp.PaymentService.HttpApi.Host/DbMigrations/PaymentServiceDatabaseMigrationEventHandler.cs
@@ -1,6 +1,5 @@
 using EShopOnAbp.PaymentService.EntityFrameworkCore;
 using EShopOnAbp.Shared.Hosting.Microservices.DbMigrations.EfCore;
-using Microsoft.Extensions.Logging;
 using System;
 using System.Threading.Tasks;
 using Serilog;