diff --git a/framework/src/Volo.Abp.BackgroundWorkers/Volo/Abp/BackgroundWorkers/InMemoryDynamicBackgroundWorker.cs b/framework/src/Volo.Abp.BackgroundWorkers/Volo/Abp/BackgroundWorkers/InMemoryDynamicBackgroundWorker.cs
index bab468a655..7bffb3895a 100644
--- a/framework/src/Volo.Abp.BackgroundWorkers/Volo/Abp/BackgroundWorkers/InMemoryDynamicBackgroundWorker.cs
+++ b/framework/src/Volo.Abp.BackgroundWorkers/Volo/Abp/BackgroundWorkers/InMemoryDynamicBackgroundWorker.cs
@@ -1,10 +1,12 @@
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.Extensions.DependencyInjection;
+using Volo.Abp.DependencyInjection;
 using Volo.Abp.Threading;
 
 namespace Volo.Abp.BackgroundWorkers;
 
+[DisableConventionalRegistration]
 public class InMemoryDynamicBackgroundWorker : AsyncPeriodicBackgroundWorkerBase
 {
     public string WorkerName { get; }
diff --git a/framework/test/Volo.Abp.BackgroundJobs.Tests/Volo/Abp/BackgroundWorkers/InMemoryDynamicBackgroundWorker_Registration_Tests.cs b/framework/test/Volo.Abp.BackgroundJobs.Tests/Volo/Abp/BackgroundWorkers/InMemoryDynamicBackgroundWorker_Registration_Tests.cs
new file mode 100644
index 0000000000..de673886f5
--- /dev/null
+++ b/framework/test/Volo.Abp.BackgroundJobs.Tests/Volo/Abp/BackgroundWorkers/InMemoryDynamicBackgroundWorker_Registration_Tests.cs
@@ -0,0 +1,33 @@
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.Extensions.DependencyInjection;
+using Shouldly;
+using Xunit;
+
+namespace Volo.Abp.BackgroundWorkers;
+
+public class InMemoryDynamicBackgroundWorker_Registration_Tests
+{
+    [Fact]
+    public async Task Should_Not_Be_Auto_Registered_To_DI_Container()
+    {
+        // Regression guard: IBackgroundWorker derives from ISingletonDependency, so without
+        // [DisableConventionalRegistration] the conventional registration would register
+        // InMemoryDynamicBackgroundWorker as a Singleton. Its constructor takes a `string
+        // workerName` parameter that the DI container cannot resolve, which broke any host
+        // running ServiceCollection validation (e.g. ASP.NET Core in Development, where
+        // WebApplicationBuilder.Build() enables ValidateOnBuild).
+        using var application = await AbpApplicationFactory.CreateAsync<AbpBackgroundWorkersModule>();
+
+        application.Services
+            .Any(d => d.ServiceType == typeof(InMemoryDynamicBackgroundWorker))
+            .ShouldBeFalse(
+                "InMemoryDynamicBackgroundWorker is created on demand by DefaultDynamicBackgroundWorkerManager " +
+                "and must not be auto-registered as a service.");
+
+        // Building a fresh provider with ValidateOnBuild = true must not throw.
+        await using var validatingProvider = application.Services.BuildServiceProvider(
+            new ServiceProviderOptions { ValidateOnBuild = true });
+        validatingProvider.ShouldNotBeNull();
+    }
+}