diff --git a/modules/background-jobs/src/Volo.Abp.BackgroundJobs.Domain/Volo/Abp/BackgroundJobs/BackgroundJobRecord.cs b/modules/background-jobs/src/Volo.Abp.BackgroundJobs.Domain/Volo/Abp/BackgroundJobs/BackgroundJobRecord.cs
index 76106ea468..c539ea8d89 100644
--- a/modules/background-jobs/src/Volo.Abp.BackgroundJobs.Domain/Volo/Abp/BackgroundJobs/BackgroundJobRecord.cs
+++ b/modules/background-jobs/src/Volo.Abp.BackgroundJobs.Domain/Volo/Abp/BackgroundJobs/BackgroundJobRecord.cs
@@ -48,7 +48,7 @@ namespace Volo.Abp.BackgroundJobs
         /// </summary>
         public virtual BackgroundJobPriority Priority { get; set; }
 
-        private BackgroundJobRecord()
+        protected BackgroundJobRecord()
         {
             
         }
diff --git a/modules/background-jobs/src/Volo.Abp.BackgroundJobs.EntityFrameworkCore/Volo/Abp/BackgroundJobs/EntityFrameworkCore/EfCoreBackgroundJobRepository.cs b/modules/background-jobs/src/Volo.Abp.BackgroundJobs.EntityFrameworkCore/Volo/Abp/BackgroundJobs/EntityFrameworkCore/EfCoreBackgroundJobRepository.cs
index 8c786c9f37..29d2bb0170 100644
--- a/modules/background-jobs/src/Volo.Abp.BackgroundJobs.EntityFrameworkCore/Volo/Abp/BackgroundJobs/EntityFrameworkCore/EfCoreBackgroundJobRepository.cs
+++ b/modules/background-jobs/src/Volo.Abp.BackgroundJobs.EntityFrameworkCore/Volo/Abp/BackgroundJobs/EntityFrameworkCore/EfCoreBackgroundJobRepository.cs
@@ -21,13 +21,13 @@ namespace Volo.Abp.BackgroundJobs.EntityFrameworkCore
             Clock = clock;
         }
 
-        public async Task<List<BackgroundJobRecord>> GetWaitingListAsync(int maxResultCount)
+        public virtual async Task<List<BackgroundJobRecord>> GetWaitingListAsync(int maxResultCount)
         {
             return await GetWaitingListQuery(maxResultCount)
                 .ToListAsync();
         }
 
-        private IQueryable<BackgroundJobRecord> GetWaitingListQuery(int maxResultCount)
+        protected virtual IQueryable<BackgroundJobRecord> GetWaitingListQuery(int maxResultCount)
         {
             var now = Clock.Now;
             return DbSet
diff --git a/modules/background-jobs/src/Volo.Abp.BackgroundJobs.MongoDB/Volo/Abp/BackgroundJobs/MongoDB/MongoBackgroundJobRepository.cs b/modules/background-jobs/src/Volo.Abp.BackgroundJobs.MongoDB/Volo/Abp/BackgroundJobs/MongoDB/MongoBackgroundJobRepository.cs
index 33903c1e9f..4399e15a98 100644
--- a/modules/background-jobs/src/Volo.Abp.BackgroundJobs.MongoDB/Volo/Abp/BackgroundJobs/MongoDB/MongoBackgroundJobRepository.cs
+++ b/modules/background-jobs/src/Volo.Abp.BackgroundJobs.MongoDB/Volo/Abp/BackgroundJobs/MongoDB/MongoBackgroundJobRepository.cs
@@ -21,13 +21,13 @@ namespace Volo.Abp.BackgroundJobs.MongoDB
             Clock = clock;
         }
 
-        public async Task<List<BackgroundJobRecord>> GetWaitingListAsync(int maxResultCount)
+        public virtual async Task<List<BackgroundJobRecord>> GetWaitingListAsync(int maxResultCount)
         {
             return await GetWaitingListQuery(maxResultCount)
                 .ToListAsync();
         }
 
-        private IMongoQueryable<BackgroundJobRecord> GetWaitingListQuery(int maxResultCount)
+        protected virtual IMongoQueryable<BackgroundJobRecord> GetWaitingListQuery(int maxResultCount)
         {
             var now = Clock.Now;
             return GetMongoQueryable()