diff --git a/NHSISL.LibPostalClient.Tests.Acceptance/NHSISL.LibPostalClient.Tests.Acceptance.csproj b/NHSISL.LibPostalClient.Tests.Acceptance/NHSISL.LibPostalClient.Tests.Acceptance.csproj
index 66d42c4..5dae187 100644
--- a/NHSISL.LibPostalClient.Tests.Acceptance/NHSISL.LibPostalClient.Tests.Acceptance.csproj
+++ b/NHSISL.LibPostalClient.Tests.Acceptance/NHSISL.LibPostalClient.Tests.Acceptance.csproj
@@ -16,7 +16,7 @@
 	<ItemGroup>
 		<PackageReference Include="CompareNETObjects" Version="4.84.0" />
 		<PackageReference Include="DeepCloner" Version="0.10.4" />
-		<PackageReference Include="FluentAssertions" Version="[7.2.2]" />
+		<PackageReference Include="FluentAssertions" Version="[8.10.0]" />
 		<PackageReference Include="Microsoft.Extensions.Configuration" Version="10.0.8" />
 
 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.8.1" />
diff --git a/NHSISL.LibPostalClient.Tests.Unit/NHSISL.LibPostalClient.Tests.Unit.csproj b/NHSISL.LibPostalClient.Tests.Unit/NHSISL.LibPostalClient.Tests.Unit.csproj
index 6e23261..60dc70b 100644
--- a/NHSISL.LibPostalClient.Tests.Unit/NHSISL.LibPostalClient.Tests.Unit.csproj
+++ b/NHSISL.LibPostalClient.Tests.Unit/NHSISL.LibPostalClient.Tests.Unit.csproj
@@ -12,7 +12,7 @@
 	<ItemGroup>
 		<PackageReference Include="CompareNETObjects" Version="4.84.0" />
 		<PackageReference Include="DeepCloner" Version="0.10.4" />
-		<PackageReference Include="FluentAssertions" Version="[7.2.2]" />
+		<PackageReference Include="FluentAssertions" Version="[8.10.0]" />
 		<PackageReference Include="Microsoft.Extensions.Configuration" Version="10.0.8" />
 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.8.1" />
 		<PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="10.0.8" />