diff --git a/src/tools/winui-analyzer/Microsoft.WindowsAppSDK.Analyzers.Tests/Microsoft.WindowsAppSDK.Analyzers.Tests.csproj b/src/tools/winui-analyzer/Microsoft.WindowsAppSDK.Analyzers.Tests/Microsoft.WindowsAppSDK.Analyzers.Tests.csproj
index 667067a5..df778541 100644
--- a/src/tools/winui-analyzer/Microsoft.WindowsAppSDK.Analyzers.Tests/Microsoft.WindowsAppSDK.Analyzers.Tests.csproj
+++ b/src/tools/winui-analyzer/Microsoft.WindowsAppSDK.Analyzers.Tests/Microsoft.WindowsAppSDK.Analyzers.Tests.csproj
@@ -13,7 +13,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.6.0" />
     <PackageReference Include="xunit.v3" Version="3.2.2" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.12.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="5.9.0" />
     <PackageReference Include="coverlet.collector" Version="10.0.1" />
   </ItemGroup>