diff --git a/visualc/xspice/digital.vcxproj b/visualc/xspice/digital.vcxproj
index 1a05a89e8..e5f3215ef 100644
--- a/visualc/xspice/digital.vcxproj
+++ b/visualc/xspice/digital.vcxproj
@@ -208,6 +208,8 @@
       <AdditionalIncludeDirectories>..\..\src\xspice\%(RelativeDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <ClCompile Include="icm\digital\adc_bridge\adc_bridge-ifspec.c" />
+    <ClCompile Include="icm\digital\bidi_bridge\bidi_bridge-cfunc.c" />
+    <ClCompile Include="icm\digital\bidi_bridge\bidi_bridge-ifspec.c" />
     <ClCompile Include="icm\digital\dac_bridge\dac_bridge-cfunc.c">
       <AdditionalIncludeDirectories>..\..\src\xspice\%(RelativeDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
@@ -321,6 +323,8 @@
   <ItemGroup>
     <None Include="..\..\src\xspice\icm\digital\adc_bridge\cfunc.mod" />
     <None Include="..\..\src\xspice\icm\digital\adc_bridge\ifspec.ifs" />
+    <None Include="..\..\src\xspice\icm\digital\bidi_bridge\cfunc.mod" />
+    <None Include="..\..\src\xspice\icm\digital\bidi_bridge\ifspec.ifs" />
     <None Include="..\..\src\xspice\icm\digital\dac_bridge\cfunc.mod" />
     <None Include="..\..\src\xspice\icm\digital\dac_bridge\ifspec.ifs" />
     <None Include="..\..\src\xspice\icm\digital\d_and\cfunc.mod" />
@@ -384,4 +388,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
+</Project>
\ No newline at end of file