diff --git a/Samples/VpSharp.VB_Sample/VpSharp.VB_Sample.vbproj b/Samples/VpSharp.VB_Sample/VpSharp.VB_Sample.vbproj
index 0874923..23db2fe 100644
--- a/Samples/VpSharp.VB_Sample/VpSharp.VB_Sample.vbproj
+++ b/Samples/VpSharp.VB_Sample/VpSharp.VB_Sample.vbproj
@@ -4,6 +4,7 @@
         <OutputType>Exe</OutputType>
         <RootNamespace>VpSharp.VB_Sample</RootNamespace>
         <TargetFramework>net8.0</TargetFramework>
+        <LangVersion>16.9</LangVersion>
     </PropertyGroup>
 
     <ItemGroup>