diff --git a/source/Nice3point.Revit.Extensions/Nice3point.Revit.Extensions.csproj b/source/Nice3point.Revit.Extensions/Nice3point.Revit.Extensions.csproj
index b3449d8..3f2a282 100644
--- a/source/Nice3point.Revit.Extensions/Nice3point.Revit.Extensions.csproj
+++ b/source/Nice3point.Revit.Extensions/Nice3point.Revit.Extensions.csproj
@@ -74,7 +74,7 @@
         <PackageReference Include="Nice3point.Revit.Api.RevitAPIUI" Version="$(RevitVersion).*" PrivateAssets="all"/>
         <PackageReference Include="Nice3point.Revit.Api.UIFramework" Version="$(RevitVersion).*" PrivateAssets="all"/>
         <PackageReference Include="Nice3point.Revit.Api.UIFrameworkServices" Version="$(RevitVersion).*" PrivateAssets="all"/>
-        <PackageReference Include="Polyfill" Version="9.0.3" PrivateAssets="all"/>
+        <PackageReference Include="Polyfill" Version="9.1.0" PrivateAssets="all"/>
         <PackageReference Include="JetBrains.Annotations" Version="2025.2.2"/>
     </ItemGroup>