diff --git a/src/AustralianProtectiveMarkings/AustralianProtectiveMarkings.csproj b/src/AustralianProtectiveMarkings/AustralianProtectiveMarkings.csproj
index e817b1f..bfd227c 100644
--- a/src/AustralianProtectiveMarkings/AustralianProtectiveMarkings.csproj
+++ b/src/AustralianProtectiveMarkings/AustralianProtectiveMarkings.csproj
@@ -6,7 +6,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="System.Collections.Immutable" Version="8.0.0" Condition="'$(TargetFramework)' != 'net8.0'" />
-    <PackageReference Include="Polyfill" Version="4.4.0" PrivateAssets="all" />
+    <PackageReference Include="Polyfill" Version="4.4.1" PrivateAssets="all" />
     <PackageReference Include="ProjectDefaults" Version="1.0.126" PrivateAssets="all" />
     <PackageReference Include="System.IO.Compression" Version="4.3.0" Condition="$(TargetFramework) == net48" />
   </ItemGroup>
diff --git a/src/Verify.AustralianProtectiveMarkings/Verify.AustralianProtectiveMarkings.csproj b/src/Verify.AustralianProtectiveMarkings/Verify.AustralianProtectiveMarkings.csproj
index 42d2972..33372dd 100644
--- a/src/Verify.AustralianProtectiveMarkings/Verify.AustralianProtectiveMarkings.csproj
+++ b/src/Verify.AustralianProtectiveMarkings/Verify.AustralianProtectiveMarkings.csproj
@@ -8,7 +8,7 @@
     <PackageReference Include="NodaTime" Version="3.1.11" />
     <PackageReference Include="Verify" Version="23.7.1" />
     <PackageReference Include="ProjectDefaults" Version="1.0.126" PrivateAssets="all" />
-    <PackageReference Include="Polyfill" Version="4.4.0" PrivateAssets="all" />
+    <PackageReference Include="Polyfill" Version="4.4.1" PrivateAssets="all" />
     <ProjectReference Include="..\AustralianProtectiveMarkings\AustralianProtectiveMarkings.csproj" />
   </ItemGroup>
 </Project>
\ No newline at end of file