diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a4f143b9..e335e757 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -5,9 +5,6 @@ on:
     branches:
       - "**"
 
-env:
-  LD_DEBUG: all
-
 jobs:
   build:
     name: Build
diff --git a/src/DataAccess/src/SIL.DataAccess/SIL.DataAccess.csproj b/src/DataAccess/src/SIL.DataAccess/SIL.DataAccess.csproj
index bc53a767..de740ea0 100644
--- a/src/DataAccess/src/SIL.DataAccess/SIL.DataAccess.csproj
+++ b/src/DataAccess/src/SIL.DataAccess/SIL.DataAccess.csproj
@@ -21,7 +21,7 @@
 		<PackageReference Include="MongoDB.Driver.Core.Extensions.DiagnosticSources" Version="1.3.0" />
 		<PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
 		<PackageReference Include="Nito.AsyncEx" Version="5.1.2" />
-		<PackageReference Include="SIL.Core" Version="14.1.1" />
+		<PackageReference Include="SIL.Core" Version="12.0.1" />
 	</ItemGroup>
 
 </Project>
diff --git a/src/Machine/src/Serval.Machine.Shared/Serval.Machine.Shared.csproj b/src/Machine/src/Serval.Machine.Shared/Serval.Machine.Shared.csproj
index 85670e00..6b716479 100644
--- a/src/Machine/src/Serval.Machine.Shared/Serval.Machine.Shared.csproj
+++ b/src/Machine/src/Serval.Machine.Shared/Serval.Machine.Shared.csproj
@@ -40,7 +40,7 @@
 		<PackageReference Include="SIL.Machine" Version="3.2.1" Condition="!Exists('..\..\..\..\..\machine\src\SIL.Machine\SIL.Machine.csproj')" />
 		<PackageReference Include="SIL.Machine.Morphology.HermitCrab" Version="3.2.1" Condition="!Exists('..\..\..\..\..\machine\src\SIL.Machine.Morphology.HermitCrab\SIL.Machine.Morphology.HermitCrab.csproj')" />
 		<PackageReference Include="SIL.Machine.Translation.Thot" Version="3.2.1" Condition="!Exists('..\..\..\..\..\machine\src\SIL.Machine.Translation.Thot\SIL.Machine.Translation.Thot.csproj')" />
-		<PackageReference Include="SIL.WritingSystems" Version="14.1.1" />
+		<PackageReference Include="SIL.WritingSystems" Version="12.0.1" />
 		<PackageReference Include="System.Linq.Async" Version="6.0.1" />
 	</ItemGroup>
 
diff --git a/src/Machine/test/Serval.Machine.Shared.Tests/Serval.Machine.Shared.Tests.csproj b/src/Machine/test/Serval.Machine.Shared.Tests/Serval.Machine.Shared.Tests.csproj
index 83b43cf4..b8c398f9 100644
--- a/src/Machine/test/Serval.Machine.Shared.Tests/Serval.Machine.Shared.Tests.csproj
+++ b/src/Machine/test/Serval.Machine.Shared.Tests/Serval.Machine.Shared.Tests.csproj
@@ -39,6 +39,7 @@
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 		</PackageReference>
 		<PackageReference Include="RichardSzalay.MockHttp" Version="7.0.0" />
+		<PackageReference Include="icu.net" Version="2.9.0" />
 	</ItemGroup>
 
 	<ItemGroup>
@@ -49,16 +50,9 @@
 		<Service Include="{82a7f48d-3b50-4b1e-b82e-3ada8210c358}" />
 	</ItemGroup>
 
-	<!-- Include icu.net.dll.config in output to resolve libdl.so -->
-	<ItemGroup>
-	<None Update=".\icu.net.dll.config">
-		<CopyToOutputDirectory>Always</CopyToOutputDirectory>
-	</None>
-	</ItemGroup>
-
 	<!-- Include icu.net.dll.config - which is only available after the package is built -->
 	<ItemGroup>
-		<ResolvedFileToPublish Include=".\bin\Debug\net8.0\icu.net.dll.config">
+		<ResolvedFileToPublish Include=".\bin\Release\net8.0\icu.net.dll.config">
 			<RelativePath>icu.net.dll.config</RelativePath>
 		</ResolvedFileToPublish>
 	</ItemGroup>