diff --git a/Directory.Build.props b/Directory.Build.props
index 532a2f2..c8a752b 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -8,7 +8,7 @@
 
 	<PropertyGroup>
         <LangVersion>12.0</LangVersion>
-		<TargetFrameworks>net6.0;net7.0;net8.0</TargetFrameworks>
+		<TargetFrameworks>net8.0;net9.0</TargetFrameworks>
 		<Platform>AnyCPU</Platform>
 		<ImplicitUsings>enable</ImplicitUsings>
 		<Nullable>enable</Nullable>
diff --git a/Expressif.Testing/Expressif.Testing.csproj b/Expressif.Testing/Expressif.Testing.csproj
index cdeff9e..53e016d 100644
--- a/Expressif.Testing/Expressif.Testing.csproj
+++ b/Expressif.Testing/Expressif.Testing.csproj
@@ -17,6 +17,7 @@
 			<PrivateAssets>all</PrivateAssets>
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 		</PackageReference>
+		<PackageReference Include="System.Text.RegularExpressions" Version="4.3.1" />
 	</ItemGroup>
   <PropertyGroup>
     <DefaultItemExcludes>$(DefaultItemExcludes);TestResults\**;coverage.*.json</DefaultItemExcludes>
diff --git a/Expressif/Expressif.csproj b/Expressif/Expressif.csproj
index d7dbae5..f7ef0e8 100644
--- a/Expressif/Expressif.csproj
+++ b/Expressif/Expressif.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 	<PropertyGroup>
         <PackageId>Expressif</PackageId>
         <RepositoryUrl>https://github.com/Seddryck/Expressif</RepositoryUrl>
@@ -10,5 +10,6 @@
 	</PropertyGroup>
 	<ItemGroup>
 		<PackageReference Include="Sprache" Version="2.3.1" />
+		<PackageReference Include="System.Text.RegularExpressions" Version="4.3.1" />
 	</ItemGroup>
 </Project>
diff --git a/appveyor.yml b/appveyor.yml
index e5f6473..8a8e89e 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -21,10 +21,17 @@ environment:
 
 init:
 - cmd: git config --global core.autocrlf true
-- cmd: setx IGNORE_NORMALISATION_GIT_HEAD_MOVE "1"
+- cmd: setx IGNORE_NORMALISATION_GIT_HEAD_MOVE 1
+- cmd: setx DOTNET_NO_WORKLOAD_UPDATE_NOTIFICATION 1
+- cmd: setx DOTNET_CLI_TELEMETRY_OPTOUT 1
+- cmd: setx DOTNET_NOLOGO 1
 - cmd: RefreshEnv.cmd
 - pwsh: Write-Host "Target branch is '$($env:APPVEYOR_REPO_BRANCH)'"
-- cmd: dotnet --version
+
+install:
+- ps: |
+    Invoke-WebRequest -Uri 'https://dot.net/v1/dotnet-install.ps1' -UseBasicParsing -OutFile "$env:temp\dotnet-install.ps1"
+    & $env:temp\dotnet-install.ps1 -Architecture x64 -Version '9.0.100' -InstallDir "$env:ProgramFiles\dotnet"
 
 before_build:
 - cmd: gitversion /output buildserver /verbosity Minimal
diff --git a/generate-info.ps1 b/generate-info.ps1
index f7dd19d..6e28604 100644
--- a/generate-info.ps1
+++ b/generate-info.ps1
@@ -20,7 +20,7 @@ If(Test-Path -LiteralPath $destinationPath\$destinationFile -PathType leaf) {
 
 $assemblyPath = "Expressif\bin"
 Set-Location $assemblyPath
-$dllfile = "net6.0\Expressif.dll"
+$dllfile = "net8.0\Expressif.dll"
 If ((-not (Test-Path -Path "Release\$dllfile")) -or ("Release\$dllfile".CreationTime -lt "Debug\$dllfile".CreationTime)) {
     $directory = "Debug"    
 } else {