diff --git a/src/Thrift.Net.Tests/Thrift.Net.Tests.csproj b/src/Thrift.Net.Tests/Thrift.Net.Tests.csproj
index 07c3114..9e50c33 100644
--- a/src/Thrift.Net.Tests/Thrift.Net.Tests.csproj
+++ b/src/Thrift.Net.Tests/Thrift.Net.Tests.csproj
@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="ApacheThrift" Version="0.14.1" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="3.9.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.3.1" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Scripting" Version="3.9.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.4" />
     <PackageReference Include="NSubstitute" Version="4.2.2" />