diff --git a/.github/workflows/dotnetcore.yml b/.github/workflows/dotnet-build.yml
similarity index 77%
rename from .github/workflows/dotnetcore.yml
rename to .github/workflows/dotnet-build.yml
index 13b6e93..7469959 100644
--- a/.github/workflows/dotnetcore.yml
+++ b/.github/workflows/dotnet-build.yml
@@ -1,4 +1,4 @@
-name: .NET Core
+name: .NET build
 
 on: 
   push:
@@ -14,10 +14,11 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    - name: Setup .NET Core
+    - name: Setup .NET
       uses: actions/setup-dotnet@v4.0.0
       with:
-        dotnet-version: 3.1.100
+        dotnet-version: 8.x
+        dotnet-quality: 'ga'        
     - name: Build with dotnet
       run: dotnet build --configuration Release
     - name: Test with dotnet
diff --git a/PVOutput.Net.sln b/PVOutput.Net.sln
index f30fdb9..eefd75b 100644
--- a/PVOutput.Net.sln
+++ b/PVOutput.Net.sln
@@ -10,8 +10,8 @@ EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Project files", "Project files", "{0BCF7233-827B-4A45-8FB8-CDE08CB4B9AE}"
 	ProjectSection(SolutionItems) = preProject
 		CHANGELOG.md = CHANGELOG.md
-		CODE_OF_CONDUCT.md = CODE_OF_CONDUCT.md
 		codecov.yml = codecov.yml
+		CODE_OF_CONDUCT.md = CODE_OF_CONDUCT.md
 		CONTRIBUTING.md = CONTRIBUTING.md
 		.github\dependabot.yml = .github\dependabot.yml
 		LICENSE = LICENSE
@@ -28,8 +28,8 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Workflows", "Workflows", "{
 		.github\workflows\codecov.yml = .github\workflows\codecov.yml
 		.github\workflows\codeql-analysis.yml = .github\workflows\codeql-analysis.yml
 		.github\workflows\docfx.yml = .github\workflows\docfx.yml
-		.github\workflows\dotnetcore.yml = .github\workflows\dotnetcore.yml
 		.github\workflows\publish-nuget.yml = .github\workflows\publish-nuget.yml
+		.github\workflows\dotnet-build.yml = .github\workflows\dotnet-build.yml
 	EndProjectSection
 EndProject
 Global
diff --git a/tests/PVOutput.Net.Tests/PVOutput.Net.Tests.csproj b/tests/PVOutput.Net.Tests/PVOutput.Net.Tests.csproj
index 42ada72..c4a5d44 100644
--- a/tests/PVOutput.Net.Tests/PVOutput.Net.Tests.csproj
+++ b/tests/PVOutput.Net.Tests/PVOutput.Net.Tests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
     <OutputPath>..\..\artifacts\</OutputPath>
@@ -11,7 +11,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <PackageReference Include="NSubstitute" Version="5.1.0" />
-    <PackageReference Include="NUnit" Version="3.14.0" />
+    <PackageReference Include="NUnit" Version="4.0.1" />
     <PackageReference Include="NUnit.Analyzers" Version="3.10.0" />
     <PackageReference Include="RichardSzalay.MockHttp" Version="7.0.0" />
 		<PackageReference Include="NUnit3TestAdapter" Version="4.5.0">
diff --git a/tests/PVOutput.Net.Tests/packages.config b/tests/PVOutput.Net.Tests/packages.config
index 057c2df..4080f7e 100644
--- a/tests/PVOutput.Net.Tests/packages.config
+++ b/tests/PVOutput.Net.Tests/packages.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="NUnit" version="3.14.0" targetFramework="net471" />
+  <package id="NUnit" version="4.0.1" targetFramework="net8" />
   <package id="RichardSzalay.MockHttp" version="7.0.0" targetFramework="net471" />
   <package id="Tavis.UriTemplates" version="2.0.0" targetFramework="net471" />
 </packages>
\ No newline at end of file