diff --git a/LibDgf/LibDgf.csproj b/LibDgf/LibDgf.csproj
index e64087f..3e9867b 100644
--- a/LibDgf/LibDgf.csproj
+++ b/LibDgf/LibDgf.csproj
@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
+    <LangVersion>8.0</LangVersion>
   </PropertyGroup>
 
   <ItemGroup>