diff --git a/.gitignore b/.gitignore
index 68c6b47f..499e69ba 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,10 @@
+.vs
 *.sln
 *.suo
+*.vcproj
 *.vcxproj
 *.vcxproj.filters
+UpgradeLog*.htm
 *.pyc
 winpty.sdf
 winpty.opensdf
diff --git a/vcbuild.bat b/vcbuild.bat
index f3787a20..2a83379d 100755
--- a/vcbuild.bat
+++ b/vcbuild.bat
@@ -74,6 +74,12 @@ if errorlevel 1 (
     exit /b 1
 )
 
+REM -------------------------------------------------------------------------
+REM -- Upgrade the project.
+devenv winpty.sln /Upgrade 2>nul || (
+    echo warning: Solution upgrade not yet succeeded
+)
+
 REM -------------------------------------------------------------------------
 REM -- Compile the project.