diff --git a/src/SJZY.Track.Repository/SJZY.Track.Repository.csproj b/src/SJZY.Track.Repository/SJZY.Track.Repository.csproj
index d75f4b08..42332f80 100644
--- a/src/SJZY.Track.Repository/SJZY.Track.Repository.csproj
+++ b/src/SJZY.Track.Repository/SJZY.Track.Repository.csproj
@@ -1,8 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
-	<Import Project="../../common.props"/>
+	<Import Project="../../common.props" />
 	<PropertyGroup>
 		<TargetFramework>net7.0</TargetFramework>
 		<GenerateDocumentationFile>True</GenerateDocumentationFile>
+		<LangVersion>preview</LangVersion>
 	</PropertyGroup>
 
 	<ItemGroup>