diff --git a/src/Spark.Engine/Spark.Engine.csproj b/src/Spark.Engine/Spark.Engine.csproj
index 950cc1797..c1ab0c030 100644
--- a/src/Spark.Engine/Spark.Engine.csproj
+++ b/src/Spark.Engine/Spark.Engine.csproj
@@ -15,7 +15,7 @@
 
     <ItemGroup>
         <PackageReference Include="Fhir.Metrics" Version="1.3.1" />
-        <PackageReference Include="Hl7.Fhir.R4" Version="5.12.2" />
+        <PackageReference Include="Hl7.Fhir.R4" Version="6.0.1" />
     </ItemGroup>
 
 </Project>