diff --git a/sys/windows/vs/hacklib/hacklib.vcxproj b/sys/windows/vs/hacklib/hacklib.vcxproj
index 9243ceb8c..9ac94ffb1 100644
--- a/sys/windows/vs/hacklib/hacklib.vcxproj
+++ b/sys/windows/vs/hacklib/hacklib.vcxproj
@@ -67,13 +67,13 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v145</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v145</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
diff --git a/sys/windows/vs/lualib/lualib.vcxproj b/sys/windows/vs/lualib/lualib.vcxproj
index e8a5efe0a..185f94b9d 100644
--- a/sys/windows/vs/lualib/lualib.vcxproj
+++ b/sys/windows/vs/lualib/lualib.vcxproj
@@ -93,13 +93,13 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v145</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v145</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>