diff --git a/iso.gmh.core/iso.gmh.core.csproj b/iso.gmh.core/iso.gmh.core.csproj
index a1b2797..dd6a9ac 100644
--- a/iso.gmh.core/iso.gmh.core.csproj
+++ b/iso.gmh.core/iso.gmh.core.csproj
@@ -46,7 +46,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="System.Configuration.ConfigurationManager" Version="8.0.1" />
+    <PackageReference Include="System.Configuration.ConfigurationManager" Version="9.0.0" />
   </ItemGroup>
   <ItemGroup>
     <Compile Update="Properties\Resources.Designer.cs">