diff --git a/NHSISL.LibPostalClient.Infrastructure/NHSISL.LibPostalClient.Infrastructure.csproj b/NHSISL.LibPostalClient.Infrastructure/NHSISL.LibPostalClient.Infrastructure.csproj
index 3549069..7af4f99 100644
--- a/NHSISL.LibPostalClient.Infrastructure/NHSISL.LibPostalClient.Infrastructure.csproj
+++ b/NHSISL.LibPostalClient.Infrastructure/NHSISL.LibPostalClient.Infrastructure.csproj
@@ -10,7 +10,7 @@
 	</PropertyGroup>
 
 	<ItemGroup>
-		<PackageReference Include="ADotNet" Version="3.0.4" />
+		<PackageReference Include="ADotNet" Version="4.1.0" />
 	</ItemGroup>
 
 </Project>