diff --git a/.github/workflows/build_and_publish.yml b/.github/workflows/build_and_publish.yml
index c27ed3d..8ee4e31 100644
--- a/.github/workflows/build_and_publish.yml
+++ b/.github/workflows/build_and_publish.yml
@@ -14,7 +14,7 @@ jobs:
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: '2.2.x'
+        dotnet-version: '8.0.x'
     - name: Restore
       run: dotnet restore
     - name: Build with dotnet
@@ -37,6 +37,6 @@ jobs:
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: '2.2.x'
+        dotnet-version: '8.0.x'
     - name: Publish the library
       run: dotnet nuget push artifact/*.nupkg -s https://api.nuget.org/v3/index.json -k ${{ secrets.NUGET_API_KEY }} -n --skip-duplicate
diff --git a/GoCardless.Tests/GoCardless.Tests.csproj b/GoCardless.Tests/GoCardless.Tests.csproj
index 0f7a04c..f74b95a 100644
--- a/GoCardless.Tests/GoCardless.Tests.csproj
+++ b/GoCardless.Tests/GoCardless.Tests.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFrameworks>netcoreapp2.1</TargetFrameworks>
@@ -6,7 +6,7 @@
 
   <ItemGroup>
     <PackageReference Include="FluentAssertions" Version="4.19.2" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.0.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
     <PackageReference Include="NUnit" Version="3.7.1" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.8.0-alpha1" />
   </ItemGroup>
diff --git a/changes.patch b/changes.patch
deleted file mode 100644
index e69de29..0000000