diff --git a/xModels.csproj b/xModels.csproj
index 24f4619..0aa2dd7 100644
--- a/xModels.csproj
+++ b/xModels.csproj
@@ -2,11 +2,12 @@
   <!-- Runtime Definition -->
   <PropertyGroup>
     <Version>1.0.0</Version>
-    <LangVersion>8.0</LangVersion>
+    <LangVersion>12.0</LangVersion>
     <Authors>Hadi Khazaee Asl</Authors>
     <Company>SaherElm IT Center</Company>
     <PackageId>xDashboard.xModels</PackageId>
     <TargetFramework>netstandard2.0</TargetFramework>
+
     <Description>
       provide required models and related tools for using in xDashboard project.
     </Description>