diff --git a/src/Plugins/BotSharp.Plugin.MetaGLM/BotSharp.Plugin.MetaGLM.csproj b/src/Plugins/BotSharp.Plugin.MetaGLM/BotSharp.Plugin.MetaGLM.csproj
index 3314e79a..d8d7f53e 100644
--- a/src/Plugins/BotSharp.Plugin.MetaGLM/BotSharp.Plugin.MetaGLM.csproj
+++ b/src/Plugins/BotSharp.Plugin.MetaGLM/BotSharp.Plugin.MetaGLM.csproj
@@ -3,7 +3,7 @@
   <PropertyGroup>
     <TargetFramework>netstandard2.1</TargetFramework>
     <Nullable>enable</Nullable>
-    <LangVersion>$(LangVersion)</LangVersion>
+    <LangVersion>12.0</LangVersion>
     <VersionPrefix>$(BotSharpVersion)</VersionPrefix>
     <GeneratePackageOnBuild>$(GeneratePackageOnBuild)</GeneratePackageOnBuild>
     <GenerateDocumentationFile>$(GenerateDocumentationFile)</GenerateDocumentationFile>