diff --git a/Firely.Fhir.Packages.Tests.props b/Firely.Fhir.Packages.Tests.props
index bed6486..92d5d9b 100644
--- a/Firely.Fhir.Packages.Tests.props
+++ b/Firely.Fhir.Packages.Tests.props
@@ -1,6 +1,6 @@
 <Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <IsPackable>false</IsPackable>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/Firely.Fhir.Packages.props b/Firely.Fhir.Packages.props
index 78e3744..e8e65e9 100644
--- a/Firely.Fhir.Packages.props
+++ b/Firely.Fhir.Packages.props
@@ -2,10 +2,10 @@
 
 	<!-- Build properties -->
 	<PropertyGroup>
-		<TargetFrameworks>net6.0;netstandard2.0;</TargetFrameworks>
+		<TargetFrameworks>net8.0;netstandard2.0;</TargetFrameworks>
 		<Nullable>enable</Nullable>
 		<GeneratePackageOnBuild>false</GeneratePackageOnBuild>
-		<FhirNetSdkVersion>5.5.1</FhirNetSdkVersion>
+		<FhirNetSdkVersion>5.6.1</FhirNetSdkVersion>
 	</PropertyGroup>
 	
     <!-- Solution-wide properties for NuGet packaging -->
diff --git a/build/variables.yml b/build/variables.yml
index 294f196..142d393 100644
--- a/build/variables.yml
+++ b/build/variables.yml
@@ -5,6 +5,6 @@
 variables:
   buildConfiguration: 'Release'
   vmImage: 'windows-latest'
-  DOTNET_CORE_SDK: '6.0.x'
+  DOTNET_CORE_SDK: '8.0.x'
   GITHUB_PACKAGES_APIKEY: $(GitHubPushPackagesAPIKey) # key is set in variable group APIKeys
   NUGET_APIKEY: $(NuGetFhirPackagesAPIKey) # key is set in variable group APIKeys
\ No newline at end of file