diff --git a/Torch.Server/Torch.Server.csproj b/Torch.Server/Torch.Server.csproj
index 000951b..fd5a865 100644
--- a/Torch.Server/Torch.Server.csproj
+++ b/Torch.Server/Torch.Server.csproj
@@ -15,6 +15,7 @@
     <TargetFrameworkProfile />
     <NuGetPackageImportStamp>
     </NuGetPackageImportStamp>
+    <LangVersion>7.3</LangVersion>
     <PublishUrl>publish\</PublishUrl>
     <Install>true</Install>
     <InstallFrom>Disk</InstallFrom>
diff --git a/Torch/Torch.csproj b/Torch/Torch.csproj
index c7ab66f..e6d1d41 100644
--- a/Torch/Torch.csproj
+++ b/Torch/Torch.csproj
@@ -12,6 +12,7 @@
     <TargetFrameworkProfile />
     <NuGetPackageImportStamp>
     </NuGetPackageImportStamp>
+    <LangVersion>7.3</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
     <DebugSymbols>true</DebugSymbols>