diff --git a/test/netstd/Client/Client.csproj b/test/netstd/Client/Client.csproj
index 977303b..8a904dd 100644
--- a/test/netstd/Client/Client.csproj
+++ b/test/netstd/Client/Client.csproj
@@ -37,7 +37,7 @@
   <ItemGroup>
     <PackageReference Include="System.Net.Http.WinHttpHandler" Version="8.0.0" />
     <PackageReference Include="System.Runtime.Serialization.Primitives" Version="[4.3,)" />
-    <PackageReference Include="System.ServiceModel.Primitives" Version="6.2.0" />
+    <PackageReference Include="System.ServiceModel.Primitives" Version="8.0.0" />
     <PackageReference Include="System.Threading" Version="[4.3,)" />
   </ItemGroup>
 
diff --git a/test/netstd/Server/Server.csproj b/test/netstd/Server/Server.csproj
index 359578a..1bf48d9 100644
--- a/test/netstd/Server/Server.csproj
+++ b/test/netstd/Server/Server.csproj
@@ -38,7 +38,7 @@
     <PackageReference Include="System.IO.Pipes" Version="4.3.0" />
     <PackageReference Include="System.Net.Http.WinHttpHandler" Version="8.0.0" />
     <PackageReference Include="System.Runtime.Serialization.Primitives" Version="[4.3,)" />
-    <PackageReference Include="System.ServiceModel.Primitives" Version="6.2.0" />
+    <PackageReference Include="System.ServiceModel.Primitives" Version="8.0.0" />
     <PackageReference Include="System.Threading" Version="[4.3,)" />
   </ItemGroup>