diff --git a/Directory.Packages.props b/Directory.Packages.props
index e3cb55f..0ffeca1 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -53,6 +53,6 @@
     <PackageVersion Include="TestableIO.System.IO.Abstractions.Wrappers" Version="22.0.14" />
     <PackageVersion Include="Tomlyn" Version="0.19.0" />
     <PackageVersion Include="YamlDotNet" Version="16.3.0" />
-    <PackageVersion Include="Polyfill" Version="9.8.1" />
+    <PackageVersion Include="Polyfill" Version="9.9.0" />
   </ItemGroup>
 </Project>