diff --git a/modules/cms-kit/src/Volo.CmsKit.MongoDB/Volo/CmsKit/MongoDB/Blogs/MongoBlogRepository.cs b/modules/cms-kit/src/Volo.CmsKit.MongoDB/Volo/CmsKit/MongoDB/Blogs/MongoBlogRepository.cs
index e63f816bef..23e0fe1436 100644
--- a/modules/cms-kit/src/Volo.CmsKit.MongoDB/Volo/CmsKit/MongoDB/Blogs/MongoBlogRepository.cs
+++ b/modules/cms-kit/src/Volo.CmsKit.MongoDB/Volo/CmsKit/MongoDB/Blogs/MongoBlogRepository.cs
@@ -1,5 +1,6 @@
 using MongoDB.Driver.Core.Operations;
 using System;
+using System.Threading.Tasks;
 using Volo.Abp.Domain.Repositories.MongoDB;
 using Volo.Abp.MongoDB;
 using Volo.CmsKit.Blogs;