diff --git a/EDMIAPI/EDMI.API.vbproj b/EDMIAPI/EDMI.API.vbproj
index c8fb42b7..02cf7f2f 100644
--- a/EDMIAPI/EDMI.API.vbproj
+++ b/EDMIAPI/EDMI.API.vbproj
@@ -26,11 +26,11 @@
   <ItemGroup>
     <PackageReference Include="NLog" Version="5.0.5" />
     <PackageReference Include="System.Configuration.ConfigurationManager" Version="10.0.1" />
+    <PackageReference Include="System.ServiceModel.Duplex" Version="6.0.0" />
     <PackageReference Include="System.ServiceModel.Primitives" Version="8.0.0" />
     <PackageReference Include="System.ServiceModel.Http" Version="8.0.0" />
     <PackageReference Include="System.ServiceModel.NetTcp" Version="8.0.0" />
-    <PackageReference Include="System.ServiceModel.Security" Version="8.0.0" />
-    <PackageReference Include="System.ServiceModel.Duplex" Version="8.0.0" />
+    <PackageReference Include="System.ServiceModel.Security" Version="6.0.0" />
   </ItemGroup>
   <ItemGroup>
     <Compile Update="Connected Services\EDMIServiceReference\Reference.vb">