diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index da2ffba..42e7485 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -17,6 +17,6 @@ jobs:
     - uses: actions/checkout@v4
     - uses: actions/setup-dotnet@v3
       with:
-        dotnet-version: '8.0.x'
+        dotnet-version: '9.0.x'
     - name: Test
       run: dotnet test -c Release -l 'console;verbosity=detailed'
\ No newline at end of file
diff --git a/CsCheck/CsCheck.csproj b/CsCheck/CsCheck.csproj
index 31aa46c..b9bf61b 100644
--- a/CsCheck/CsCheck.csproj
+++ b/CsCheck/CsCheck.csproj
@@ -49,7 +49,7 @@ Improved PCG performance.
     </PropertyGroup>
     <ItemGroup>
         <PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="All" />
-        <PackageReference Include="Meziantou.Analyzer" Version="2.0.177" PrivateAssets="All" />
+        <PackageReference Include="Meziantou.Analyzer" Version="2.0.178" PrivateAssets="All" />
         <None Include="../CsCheck.png" Pack="true" PackagePath="" Visible="False" />
         <None Include="../README.md" Pack="true" PackagePath="" Visible="False" />
     </ItemGroup>
diff --git a/Tests/Tests.csproj b/Tests/Tests.csproj
index a32ee6d..0e69284 100644
--- a/Tests/Tests.csproj
+++ b/Tests/Tests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
-        <TargetFramework>net8.0</TargetFramework>
+        <TargetFramework>net9.0</TargetFramework>
         <LangVersion>preview</LangVersion>
         <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
         <WarningLevel>9999</WarningLevel>