diff --git a/src/DemaConsulting.ReqStream/DemaConsulting.ReqStream.csproj b/src/DemaConsulting.ReqStream/DemaConsulting.ReqStream.csproj
index 235a309..9c61e99 100644
--- a/src/DemaConsulting.ReqStream/DemaConsulting.ReqStream.csproj
+++ b/src/DemaConsulting.ReqStream/DemaConsulting.ReqStream.csproj
@@ -68,7 +68,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <!-- Polyfill is a source-only package; contentfiles delivers the polyfill source into this project -->
-    <PackageReference Include="Polyfill" Version="9.12.0">
+    <PackageReference Include="Polyfill" Version="9.13.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>