diff --git a/Directory.Build.props b/Directory.Build.props
index c114992..95d7522 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -11,7 +11,7 @@
     <CheckEolTargetFramework>false</CheckEolTargetFramework>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
-    <GenerateDocumentationFile>true</GenerateDocumentationFile>
+    <GenerateDocumentationFile Condition="!$(MSBuildProjectName.EndsWith('Tests'))">true</GenerateDocumentationFile>
     <PublishRepositoryUrl>true</PublishRepositoryUrl>
     <EmbedUntrackedSources>true</EmbedUntrackedSources>
     <IncludeSymbols>true</IncludeSymbols>
diff --git a/sample/SyncWritesDemo/Program.cs b/sample/SyncWritesDemo/Program.cs
index f1015a1..139f1f1 100644
--- a/sample/SyncWritesDemo/Program.cs
+++ b/sample/SyncWritesDemo/Program.cs
@@ -24,7 +24,7 @@
 
 Console.WriteLine("Expecting one of the following arguments:{0}--sync-root-default{0}--sync-root-separate{0}--sync-root-same", Environment.NewLine);
 
-static void SystemConsoleSyncTest(object syncRootForLogger1, object syncRootForLogger2)
+static void SystemConsoleSyncTest(object? syncRootForLogger1, object? syncRootForLogger2)
 {
     var logger1 = new LoggerConfiguration()
         .MinimumLevel.Verbose()
diff --git a/test/Serilog.Sinks.Console.Tests/Serilog.Sinks.Console.Tests.csproj b/test/Serilog.Sinks.Console.Tests/Serilog.Sinks.Console.Tests.csproj
index 2a72fac..b165f21 100644
--- a/test/Serilog.Sinks.Console.Tests/Serilog.Sinks.Console.Tests.csproj
+++ b/test/Serilog.Sinks.Console.Tests/Serilog.Sinks.Console.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net6.0;net8.0;net9.0</TargetFrameworks>
+    <TargetFrameworks>net8.0;net9.0</TargetFrameworks>
     <GenerateRuntimeConfigurationFiles>true</GenerateRuntimeConfigurationFiles>
   </PropertyGroup>