diff --git a/PCbuild/pythoncore.vcxproj b/PCbuild/pythoncore.vcxproj
index e4d4c7d..29493e3 100644
--- a/PCbuild/pythoncore.vcxproj
+++ b/PCbuild/pythoncore.vcxproj
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+﻿<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
@@ -481,6 +481,8 @@
     <ClInclude Include="..\Parser\tokenizer.h" />
     <ClInclude Include="..\PC\errmap.h" />
     <ClInclude Include="..\PC\pyconfig.h" />
+    <ClInclude Include="..\Python\ceval_gil.h" />
+    <ClInclude Include="..\Python\condvar.h" />
     <ClInclude Include="..\Python\importdl.h" />
     <ClInclude Include="..\Python\thread_nt.h" />
   </ItemGroup>
diff --git a/PCbuild/pythoncore.vcxproj.filters b/PCbuild/pythoncore.vcxproj.filters
index 1b46af8..09b4bb4 100644
--- a/PCbuild/pythoncore.vcxproj.filters
+++ b/PCbuild/pythoncore.vcxproj.filters
@@ -402,6 +402,13 @@
     <ClInclude Include="..\Python\thread_nt.h">
       <Filter>Python</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\namespaceobject.h" />
+    <ClInclude Include="..\Python\condvar.h">
+      <Filter>Python</Filter>
+    </ClInclude>
+    <ClInclude Include="..\Python\ceval_gil.h">
+      <Filter>Python</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\Modules\_bisectmodule.c">
@@ -908,6 +915,7 @@
     <ClCompile Include="..\Modules\_winapi.c">
       <Filter>PC</Filter>
     </ClCompile>
+    <ClCompile Include="..\Objects\namespaceobject.c" />
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="..\PC\python_nt.rc">