diff --git a/csharp/src/Microsoft.ML.OnnxRuntime/Microsoft.ML.OnnxRuntime.csproj b/csharp/src/Microsoft.ML.OnnxRuntime/Microsoft.ML.OnnxRuntime.csproj
index 669497220c..7033795d3e 100644
--- a/csharp/src/Microsoft.ML.OnnxRuntime/Microsoft.ML.OnnxRuntime.csproj
+++ b/csharp/src/Microsoft.ML.OnnxRuntime/Microsoft.ML.OnnxRuntime.csproj
@@ -10,7 +10,8 @@
     <AssemblyOriginatorKeyFile>..\..\OnnxRuntime.snk</AssemblyOriginatorKeyFile>
 
     <!--internal build related properties-->
-    <OnnxRuntimeCsharpRoot>..\..</OnnxRuntimeCsharpRoot>
+    <OnnxRuntimeRoot>..\..\..</OnnxRuntimeRoot>
+    <OnnxRuntimeCsharpRoot>$(OnnxRuntimeRoot)\csharp</OnnxRuntimeCsharpRoot>
     <OnnxRuntimeBuildDirectory Condition="'$(OnnxRuntimeBuildDirectory)'==''">$(OnnxRuntimeCsharpRoot)\..\build\Windows</OnnxRuntimeBuildDirectory>
     <NativeBuildOutputDir>$(OnnxRuntimeBuildDirectory)\$(Configuration)\$(Configuration)</NativeBuildOutputDir>
     <TargetArchitecture Condition=" '$(TargetArchitecture)' == '' ">x64</TargetArchitecture>  
@@ -146,6 +147,15 @@
           CopyToOutputDirectory="Never"
           Visible="false"
     />
+    <None Include="$(OnnxRuntimeRoot)\winml\api\dualapipartitionattribute.h"
+          Condition="Exists('$(OnnxRuntimeRoot)\winml\api\dualapipartitionattribute.h')
+                     And ('$(OrtPackageId)' == 'Microsoft.ML.OnnxRuntime.DirectML'
+                     Or '$(OrtPackageId)' == 'Microsoft.ML.OnnxRuntime')"
+          PackagePath="\build\native\include"
+          Pack="false"
+          CopyToOutputDirectory="Never"
+          Visible="false"
+    />
     <None Include="$(NativeBuildOutputDir)\DirectML.dll"
           Condition="Exists('$(NativeBuildOutputDir)\DirectML.dll')
                      And '$(OrtPackageId)' == 'Microsoft.ML.OnnxRuntime.DirectML'"
diff --git a/tools/nuget/generate_nuspec_for_native_nuget.py b/tools/nuget/generate_nuspec_for_native_nuget.py
index f2a4d641a2..914344d8e8 100644
--- a/tools/nuget/generate_nuspec_for_native_nuget.py
+++ b/tools/nuget/generate_nuspec_for_native_nuget.py
@@ -155,6 +155,9 @@ def generate_files(list, args):
     if (args.package_name == 'Microsoft.ML.OnnxRuntime.DirectML' or args.package_name == 'Microsoft.ML.OnnxRuntime') and os.path.exists(os.path.join(args.ort_build_path, args.build_config, 'windows.ai.machinelearning.native.h')):
         files_list.append('<file src=' + '"' + os.path.join(args.ort_build_path, args.build_config, 'windows.ai.machinelearning.native.h') + '" target="build\\native\\include\\Windows.AI.MachineLearning.Native.h" />')
 
+    if (args.package_name == 'Microsoft.ML.OnnxRuntime.DirectML' or args.package_name == 'Microsoft.ML.OnnxRuntime') and os.path.exists(os.path.join(args.ort_build_path, args.build_config, 'dualapipartitionattribute.h')):
+        files_list.append('<file src=' + '"' + os.path.join(args.ort_build_path, args.build_config, 'dualapipartitionattribute.h') + '" target="build\\native\\include\\dualapipartitionattribute.h" />')
+
     # Process dnll.dll    
     if os.path.exists(os.path.join(args.native_build_path, 'dnnl.dll')):
         files_list.append('<file src=' + '"' + os.path.join(args.native_build_path, 'dnnl.dll') + '" target="runtimes\\win-' + args.target_architecture + '\\native" />')