diff --git a/Providers/FreeSql.Provider.Dameng/FreeSql.Provider.Dameng.csproj b/Providers/FreeSql.Provider.Dameng/FreeSql.Provider.Dameng.csproj
index 4e0b6a00..9e05f5db 100644
--- a/Providers/FreeSql.Provider.Dameng/FreeSql.Provider.Dameng.csproj
+++ b/Providers/FreeSql.Provider.Dameng/FreeSql.Provider.Dameng.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
 	<PropertyGroup>
-		<TargetFrameworks>netcoreapp31;netstandard2.0;net45;net40</TargetFrameworks>
+		<TargetFrameworks>netcoreapp3.1;netstandard2.0;net45;net40</TargetFrameworks>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>FreeSql;ncc;YeXiangQin</Authors>
 		<Description>FreeSql 数据库实现，基于 达梦数据库 Ado.net (DmProvider)</Description>
@@ -30,12 +30,12 @@
 	</ItemGroup>
 
 	<ItemGroup>
-		<ProjectReference Include="..\..\FreeSql\FreeSql.csproj" />
+		<PackageReference Include="System.Text.Encoding.CodePages" Version="5.0.0" Condition="'$(TargetFramework)' == 'netcoreapp3.1'" />
+		<PackageReference Include="System.Text.Encoding.CodePages" Version="5.0.0" Condition="'$(TargetFramework)' == 'netstandard2.0'" />
 	</ItemGroup>
 
-	<ItemGroup >
-		<PackageReference Include="System.Text.Encoding.CodePages" Version="5.0.0"  Condition="'$(TargetFramework)' == 'netcoreapp3.1'"/>
-		<PackageReference Include="System.Text.Encoding.CodePages" Version="5.0.0"  Condition="'$(TargetFramework)' == 'netstandard2.0'"/>
+	<ItemGroup>
+		<ProjectReference Include="..\..\FreeSql\FreeSql.csproj" />
 	</ItemGroup>
 
 	<ItemGroup>
@@ -52,5 +52,6 @@
 		<DefineConstants>net40</DefineConstants>
 	</PropertyGroup>
 
+
 </Project>