diff --git a/firely-validator-api.props b/firely-validator-api.props
index 68e35a0d..9252ae44 100644
--- a/firely-validator-api.props
+++ b/firely-validator-api.props
@@ -28,7 +28,7 @@
 	</PropertyGroup>
 
 	<PropertyGroup>
-		<FirelySdkVersion>5.12.2</FirelySdkVersion>
+		<FirelySdkVersion>6.0.1</FirelySdkVersion>
 	</PropertyGroup>
 
 	<PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
diff --git a/src/Firely.Fhir.Validation.Compilation.STU3/Firely.Fhir.Validation.Compilation.STU3.csproj b/src/Firely.Fhir.Validation.Compilation.STU3/Firely.Fhir.Validation.Compilation.STU3.csproj
index fa72b2c8..c9c7a785 100644
--- a/src/Firely.Fhir.Validation.Compilation.STU3/Firely.Fhir.Validation.Compilation.STU3.csproj
+++ b/src/Firely.Fhir.Validation.Compilation.STU3/Firely.Fhir.Validation.Compilation.STU3.csproj
@@ -19,6 +19,7 @@
 	</ItemGroup>
 
 	<ItemGroup>
+  	<PackageReference Include="Hl7.Fhir.Base" Version="6.0.1" />
 		<ProjectReference Include="..\Firely.Fhir.Validation\Firely.Fhir.Validation.csproj" />		
 	</ItemGroup>
 </Project>
\ No newline at end of file