diff --git a/src/FakeSyslogServer/FakeSyslogServer.csproj b/src/FakeSyslogServer/FakeSyslogServer.csproj
index 739009c..c2e6f83 100644
--- a/src/FakeSyslogServer/FakeSyslogServer.csproj
+++ b/src/FakeSyslogServer/FakeSyslogServer.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0</TargetFrameworks>
     <RootNamespace>FakeSyslogServer</RootNamespace>
     <RestoreProjectStyle>PackageReference</RestoreProjectStyle>
     <OutputType>Library</OutputType>
diff --git a/src/NLog.Targets.Syslog.Schema/NLog.Targets.Syslog.Schema.csproj b/src/NLog.Targets.Syslog.Schema/NLog.Targets.Syslog.Schema.csproj
index 54f016d..cf18b47 100644
--- a/src/NLog.Targets.Syslog.Schema/NLog.Targets.Syslog.Schema.csproj
+++ b/src/NLog.Targets.Syslog.Schema/NLog.Targets.Syslog.Schema.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0</TargetFrameworks>
 
     <Product>NLog.Targets.Syslog.Schema</Product>
     <Copyright>Copyright © 2013 - present by Luigi Berrettini and others: https://github.com/luigiberrettini/NLog.Targets.Syslog/graphs/contributors</Copyright>
diff --git a/src/NLog.Targets.Syslog/NLog.Targets.Syslog.csproj b/src/NLog.Targets.Syslog/NLog.Targets.Syslog.csproj
index 5c18e0f..6774c58 100644
--- a/src/NLog.Targets.Syslog/NLog.Targets.Syslog.csproj
+++ b/src/NLog.Targets.Syslog/NLog.Targets.Syslog.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0</TargetFrameworks>
     <RootNamespace>NLog.Targets.Syslog</RootNamespace>
     <RestoreProjectStyle>PackageReference</RestoreProjectStyle>
     <OutputType>Library</OutputType>
diff --git a/src/TestAppWithGUI/TestAppWithGUI.csproj b/src/TestAppWithGUI/TestAppWithGUI.csproj
index ff98d11..74503a2 100644
--- a/src/TestAppWithGUI/TestAppWithGUI.csproj
+++ b/src/TestAppWithGUI/TestAppWithGUI.csproj
@@ -1,14 +1,12 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net6.0-windows</TargetFramework>
+    <TargetFramework>net8.0-windows</TargetFramework>
     <UseWindowsForms>true</UseWindowsForms>
     <RootNamespace>TestAppWithGui</RootNamespace>
     <RestoreProjectStyle>PackageReference</RestoreProjectStyle>
     <OutputType>WinExe</OutputType>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
-
     <RuntimeIdentifier>win-x86</RuntimeIdentifier>
-
     <Product>TestAppWithGUI</Product>
     <Copyright>Copyright © 2013 - present by Luigi Berrettini and others: https://github.com/luigiberrettini/NLog.Targets.Syslog/graphs/contributors</Copyright>
     <AssemblyTitle>NLog Syslog target test app with GUI</AssemblyTitle>
@@ -17,16 +15,13 @@
     <FileVersion>0.1.0.0</FileVersion>
     <InformationalVersion>0.1.0-alpha.1+commitHash</InformationalVersion>
     <NeutralLanguage>en</NeutralLanguage>
-
     <StartupObject>TestAppWithGui.Program</StartupObject>
   </PropertyGroup>
-
   <ItemGroup>
     <ProjectReference Include="..\FakeSyslogServer\FakeSyslogServer.csproj" />
     <ProjectReference Include="..\NLog.Targets.Syslog\NLog.Targets.Syslog.csproj" />
     <PackageReference Include="NLog.Schema" Version="5.0.0" />
   </ItemGroup>
-
   <ItemGroup>
     <Compile Update="FormTest.cs" SubType="Form" />
     <Compile Update="FormTest.designer.cs" SubType="Form" DependentUpon="FormTest.cs" />
diff --git a/src/TestAppWithTUI/TestAppWithTUI.csproj b/src/TestAppWithTUI/TestAppWithTUI.csproj
index 01c47f1..27153bf 100644
--- a/src/TestAppWithTUI/TestAppWithTUI.csproj
+++ b/src/TestAppWithTUI/TestAppWithTUI.csproj
@@ -1,13 +1,11 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <RootNamespace>TestAppWithTui</RootNamespace>
     <RestoreProjectStyle>PackageReference</RestoreProjectStyle>
     <OutputType>Exe</OutputType>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
-
     <RuntimeIdentifier>win-x86</RuntimeIdentifier>
-
     <Product>TestAppWithTUI</Product>
     <Copyright>Copyright © 2013 - present by Luigi Berrettini and others: https://github.com/luigiberrettini/NLog.Targets.Syslog/graphs/contributors</Copyright>
     <AssemblyTitle>NLog Syslog target test app with TUI</AssemblyTitle>
@@ -16,18 +14,15 @@
     <FileVersion>0.1.0.0</FileVersion>
     <InformationalVersion>0.1.0-alpha.1+commitHash</InformationalVersion>
     <NeutralLanguage>en</NeutralLanguage>
-
     <StartupObject>TestAppWithTui.Program</StartupObject>
   </PropertyGroup>
-
   <ItemGroup>
     <ProjectReference Include="..\FakeSyslogServer\FakeSyslogServer.csproj" />
     <ProjectReference Include="..\NLog.Targets.Syslog\NLog.Targets.Syslog.csproj" />
-    <PackageReference Include="Microsoft.Extensions.Configuration" Version="6.0.1" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="6.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration" Version="8.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.1" />
     <PackageReference Include="NLog.Schema" Version="5.0.0" />
   </ItemGroup>
-
   <ItemGroup>
     <None Include="..\NLog.Targets.Syslog.Schema\NLog.Targets.Syslog.xsd" Link="NLog.Targets.Syslog.xsd" />
     <None Update="appsettings.json" CopyToOutputDirectory="Always" />