diff --git a/OneWireIO.vcxproj b/OneWireIO.vcxproj
index 5125aed..3194aa6 100644
--- a/OneWireIO.vcxproj
+++ b/OneWireIO.vcxproj
@@ -71,10 +71,12 @@
     </None>
   </ItemGroup>
   <ItemGroup>
+    <ClCompile Include="OneWireSlave.cpp" />
     <ClCompile Include="SerialChannel.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="LowLevel.h" />
+    <ClInclude Include="OneWireSlave.h" />
     <ClInclude Include="SerialChannel.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
diff --git a/OneWireIO.vcxproj.filters b/OneWireIO.vcxproj.filters
index ba1919b..5960a2f 100644
--- a/OneWireIO.vcxproj.filters
+++ b/OneWireIO.vcxproj.filters
@@ -2,10 +2,12 @@
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
     <ClCompile Include="SerialChannel.cpp" />
+    <ClCompile Include="OneWireSlave.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="SerialChannel.h" />
     <ClInclude Include="LowLevel.h" />
+    <ClInclude Include="OneWireSlave.h" />
   </ItemGroup>
   <ItemGroup>
     <None Include="OneWireIO.ino" />