diff --git a/Directory.Packages.props b/Directory.Packages.props
index e11e9758b..154d1910f 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -23,8 +23,8 @@
   </ItemGroup>
   <ItemGroup Label="Compile dependencies">
     <PackageVersion Include="BenchmarkDotNet" Version="0.15.8" />
-    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.14.0" />
-    <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="3.11.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="5.9.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="5.9.0-1.26328.17" />
     <PackageVersion Include="MinVer" Version="6.0.0" />
     <PackageVersion Include="Nullable" Version="1.3.1" />
     <PackageVersion Include="Microsoft.NETFramework.ReferenceAssemblies.net472" Version="1.0.3" />
diff --git a/test/RestSharp.Tests.Shared/RestSharp.Tests.Shared.csproj b/test/RestSharp.Tests.Shared/RestSharp.Tests.Shared.csproj
index 06f32e8e6..ab808fb68 100644
--- a/test/RestSharp.Tests.Shared/RestSharp.Tests.Shared.csproj
+++ b/test/RestSharp.Tests.Shared/RestSharp.Tests.Shared.csproj
@@ -3,6 +3,7 @@
         <IsTestProject>false</IsTestProject>
     </PropertyGroup>
     <ItemGroup>
+        <PackageReference Include="Microsoft.CodeAnalysis.CSharp" />
       <PackageReference Include="WireMock.Net" />
     </ItemGroup>
     <ItemGroup>