diff --git a/IconHelper/IconHelper.csproj b/IconHelper/IconHelper.csproj
index bf718ec..9cf6a80 100644
--- a/IconHelper/IconHelper.csproj
+++ b/IconHelper/IconHelper.csproj
@@ -12,6 +12,7 @@
     <PackageReference Include="CommandLineParser" />
     <PackageReference Include="ktsu.CaseConverter" />
     <PackageReference Include="ktsu.Extensions" />
+  <PackageReference Include="Polyfill" VersionOverride="9.3.1" />
     <PackageReference Include="SixLabors.ImageSharp" />
   </ItemGroup>
 </Project>