diff --git a/Directory.Packages.props b/Directory.Packages.props
index 0693854..3b19821 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -22,5 +22,6 @@
     <PackageVersion Include="FluentAssertions" Version="8.8.0" />
     <PackageVersion Include="coverlet.collector" Version="6.0.4" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.0.0" />
+    <PackageVersion Include="System.Formats.Asn1" Version="6.0.1" />
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/src/InfinityFlow.CSharp.Eval/InfinityFlow.CSharp.Eval.csproj b/src/InfinityFlow.CSharp.Eval/InfinityFlow.CSharp.Eval.csproj
index 1d65066..fcbe225 100644
--- a/src/InfinityFlow.CSharp.Eval/InfinityFlow.CSharp.Eval.csproj
+++ b/src/InfinityFlow.CSharp.Eval/InfinityFlow.CSharp.Eval.csproj
@@ -42,6 +42,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="System.Formats.Asn1" />
     <InternalsVisibleTo Include="InfinityFlow.CSharp.Eval.Tests" />
   </ItemGroup>
 </Project>