diff --git a/NHSISL.LibPostalClient.Tests.Acceptance/NHSISL.LibPostalClient.Tests.Acceptance.csproj b/NHSISL.LibPostalClient.Tests.Acceptance/NHSISL.LibPostalClient.Tests.Acceptance.csproj
index 039d6b0..74c3895 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="4.83.0" />
 		<PackageReference Include="DeepCloner" Version="0.10.4" />
 		<PackageReference Include="FluentAssertions" Version="6.12.1" />
-		<PackageReference Include="Microsoft.Extensions.Configuration" Version="8.0.0" />
+		<PackageReference Include="Microsoft.Extensions.Configuration" Version="9.0.0" />
 
 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
 		<PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.1" />
diff --git a/NHSISL.LibPostalClient.Tests.Unit/NHSISL.LibPostalClient.Tests.Unit.csproj b/NHSISL.LibPostalClient.Tests.Unit/NHSISL.LibPostalClient.Tests.Unit.csproj
index 81f3372..6cf7eec 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="4.83.0" />
 		<PackageReference Include="DeepCloner" Version="0.10.4" />
 		<PackageReference Include="FluentAssertions" Version="6.12.1" />
-		<PackageReference Include="Microsoft.Extensions.Configuration" Version="8.0.0" />
+		<PackageReference Include="Microsoft.Extensions.Configuration" Version="9.0.0" />
 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
 		<PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.1" />
 		<PackageReference Include="CleanMoq" Version="42.42.42" />
diff --git a/NHSISL.LibPostalClient/NHSISL.LibPostalClient.csproj b/NHSISL.LibPostalClient/NHSISL.LibPostalClient.csproj
index c51da00..3e41422 100644
--- a/NHSISL.LibPostalClient/NHSISL.LibPostalClient.csproj
+++ b/NHSISL.LibPostalClient/NHSISL.LibPostalClient.csproj
@@ -99,8 +99,8 @@
 	</ItemGroup>
 
 	<ItemGroup>
+		<PackageReference Include="Microsoft.Extensions.Hosting" Version="8.0.1" />
 		<PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="9.0.0" />
-		<PackageReference Include="Microsoft.Extensions.Hosting" Version="8.0.0" />
 		<PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
 		<PackageReference Include="Xeption" Version="2.8.0" />
 	</ItemGroup>