diff --git a/make-win.bat b/make-win.bat
index 947a3a8..7b7e18d 100644
--- a/make-win.bat
+++ b/make-win.bat
@@ -30,8 +30,10 @@ goto end
 
 md bin
 md lib
+devenv source\SoundTouch\SoundTouch.vcproj /upgrade
 devenv source\SoundTouch\SoundTouch.vcproj /build debug
 devenv source\SoundTouch\SoundTouch.vcproj /build release
+devenv source\SoundStretch\SoundStretch.vcproj /upgrade
 devenv source\SoundStretch\SoundStretch.vcproj /build debug
 devenv source\SoundStretch\SoundStretch.vcproj /build release