diff --git a/NHSISL.LibPostalClient.Tests.Acceptance/NHSISL.LibPostalClient.Tests.Acceptance.csproj b/NHSISL.LibPostalClient.Tests.Acceptance/NHSISL.LibPostalClient.Tests.Acceptance.csproj
index c2a4165..523d805 100644
--- a/NHSISL.LibPostalClient.Tests.Acceptance/NHSISL.LibPostalClient.Tests.Acceptance.csproj
+++ b/NHSISL.LibPostalClient.Tests.Acceptance/NHSISL.LibPostalClient.Tests.Acceptance.csproj
@@ -17,7 +17,7 @@
 		<PackageReference Include="CompareNETObjects" Version="4.84.0" />
 		<PackageReference Include="DeepCloner" Version="0.10.4" />
 		<PackageReference Include="FluentAssertions" Version="[7.2.2]" />
-		<PackageReference Include="Microsoft.Extensions.Configuration" Version="10.0.10" />
+		<PackageReference Include="Microsoft.Extensions.Configuration" Version="10.0.11" />
 
 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.8.1" />
 		<PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="10.0.10" />
diff --git a/NHSISL.LibPostalClient.Tests.Unit/NHSISL.LibPostalClient.Tests.Unit.csproj b/NHSISL.LibPostalClient.Tests.Unit/NHSISL.LibPostalClient.Tests.Unit.csproj
index 48591ef..301e613 100644
--- a/NHSISL.LibPostalClient.Tests.Unit/NHSISL.LibPostalClient.Tests.Unit.csproj
+++ b/NHSISL.LibPostalClient.Tests.Unit/NHSISL.LibPostalClient.Tests.Unit.csproj
@@ -13,7 +13,7 @@
 		<PackageReference Include="CompareNETObjects" Version="4.84.0" />
 		<PackageReference Include="DeepCloner" Version="0.10.4" />
 		<PackageReference Include="FluentAssertions" Version="[7.2.2]" />
-		<PackageReference Include="Microsoft.Extensions.Configuration" Version="10.0.10" />
+		<PackageReference Include="Microsoft.Extensions.Configuration" Version="10.0.11" />
 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.8.1" />
 		<PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="10.0.10" />
 		<PackageReference Include="Moq" Version="4.20.72" />
diff --git a/NHSISL.LibPostalClient/NHSISL.LibPostalClient.csproj b/NHSISL.LibPostalClient/NHSISL.LibPostalClient.csproj
index 68f1cf7..0191d8a 100644
--- a/NHSISL.LibPostalClient/NHSISL.LibPostalClient.csproj
+++ b/NHSISL.LibPostalClient/NHSISL.LibPostalClient.csproj
@@ -99,6 +99,7 @@
 	</ItemGroup>
 
 	<ItemGroup>
+		<PackageReference Include="Microsoft.Extensions.Configuration" Version="10.0.11" />
 		<PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="10.0.10" />
 		<PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="10.0.10" />
 		<PackageReference Include="Microsoft.Extensions.Hosting" Version="10.0.10" />