diff --git a/Directory.Packages.props b/Directory.Packages.props
index 597f708..3cb0c03 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -52,6 +52,7 @@
     <PackageVersion Include="NuGet.Packaging" Version="6.14.0" />
     <PackageVersion Include="Octokit" Version="14.0.0" />
     <PackageVersion Include="OpenAI" Version="2.7.0" />
+    <PackageVersion Include="Polyfill" Version="9.3.1" />
     <PackageVersion Include="Spectre.Console" Version="0.50.0" />
     <PackageVersion Include="Spectre.Console.Analyzer" Version="1.0.0" />
     <PackageVersion Include="Spectre.Console.Cli" Version="0.50.0" />
diff --git a/ProjectDirector/ProjectDirector.csproj b/ProjectDirector/ProjectDirector.csproj
index 4c96f7f..0a0450f 100644
--- a/ProjectDirector/ProjectDirector.csproj
+++ b/ProjectDirector/ProjectDirector.csproj
@@ -23,5 +23,6 @@
     <PackageReference Include="LibGit2Sharp" />
     <PackageReference Include="Octokit" />
     <PackageReference Include="OpenAI" />
+  <PackageReference Include="Polyfill" />
   </ItemGroup>
 </Project>