diff --git a/Firely.Fhir.Packages.props b/Firely.Fhir.Packages.props
index 3d49b5a..aeb1707 100644
--- a/Firely.Fhir.Packages.props
+++ b/Firely.Fhir.Packages.props
@@ -5,7 +5,7 @@
 		<TargetFrameworks>net8.0;netstandard2.0;</TargetFrameworks>
 		<Nullable>enable</Nullable>
 		<GeneratePackageOnBuild>false</GeneratePackageOnBuild>
-		<FhirNetSdkVersion>5.9.0</FhirNetSdkVersion>
+		<FhirNetSdkVersion>5.9.1</FhirNetSdkVersion>
 	</PropertyGroup>
 	
     <!-- Solution-wide properties for NuGet packaging -->