diff --git a/WpfExtended/Extensions/ServiceManagerExtensions.cs b/WpfExtended/Extensions/ServiceManagerExtensions.cs
index 7e39247..bfd6869 100644
--- a/WpfExtended/Extensions/ServiceManagerExtensions.cs
+++ b/WpfExtended/Extensions/ServiceManagerExtensions.cs
@@ -15,7 +15,7 @@ namespace System.Windows.Extensions
         /// <typeparam name="TLogsWriter">Implementation of <see cref="ILogsWriter"/>.</typeparam>
         /// <param name="serviceManager"><see cref="ServiceManager"/>.</param>
         /// <returns>Provided <see cref="ServiceManager"/>.</returns>
-        public static IServiceManager RegisterLogWriter<TLogsWriter>(this IServiceManager serviceManager)
+        public static IServiceProducer RegisterLogWriter<TLogsWriter>(this IServiceProducer serviceManager)
             where TLogsWriter : ILogsWriter
         {
             serviceManager.RegisterSingleton<ILogsWriter, TLogsWriter>();
@@ -36,7 +36,7 @@ namespace System.Windows.Extensions
         /// <typeparam name="TLogsWriter">Implementation of <see cref="ILogsWriter"/>.</typeparam>
         /// <param name="serviceManager"><see cref="ServiceManager"/>.</param>
         /// <returns>Provided <see cref="ServiceManager"/>.</returns>
-        public static IServiceManager RegisterLogWriter<TILogsWriter, TLogsWriter>(this IServiceManager serviceManager)
+        public static IServiceProducer RegisterLogWriter<TILogsWriter, TLogsWriter>(this IServiceProducer serviceManager)
             where TLogsWriter : TILogsWriter
             where TILogsWriter : class, ILogsWriter
         {
diff --git a/WpfExtended/WpfExtended.csproj b/WpfExtended/WpfExtended.csproj
index 657ce77..a697cae 100644
--- a/WpfExtended/WpfExtended.csproj
+++ b/WpfExtended/WpfExtended.csproj
@@ -6,7 +6,7 @@
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
     <PackageLicenseFile>License.txt</PackageLicenseFile>
-    <Version>0.4</Version>
+    <Version>0.4.1</Version>
     <LangVersion>latest</LangVersion>
     <Description>Extension library for Windows Presentation Platform.