diff --git a/lib/netstd/Directory.Build.props b/lib/netstd/Directory.Build.props
new file mode 100644
index 0000000..3bd9541
--- /dev/null
+++ b/lib/netstd/Directory.Build.props
@@ -0,0 +1,7 @@
+<Project>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.0" PrivateAssets="All" />
+  </ItemGroup>
+
+</Project>