diff --git a/SourceGen/SourceGen.csproj b/SourceGen/SourceGen.csproj
index 62ee203..9562a82 100644
--- a/SourceGen/SourceGen.csproj
+++ b/SourceGen/SourceGen.csproj
@@ -11,7 +11,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.11.0" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.12.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.11.0" />
     <Compile Include="../Core/LanguagePolyfill.cs" />
   </ItemGroup>