diff --git a/Directory.Build.props b/Directory.Build.props
new file mode 100644
index 0000000..b2b1270
--- /dev/null
+++ b/Directory.Build.props
@@ -0,0 +1,13 @@
+<Project>
+	<PropertyGroup>
+		<Version>1.0.0-rc2</Version>
+		<Nullable>enable</Nullable>
+		<Description>github定制版的dns服务，解析github最优的ip</Description>
+		<Copyright>https://github.com/xljiulang/FastGithub</Copyright>
+	</PropertyGroup>
+
+	<PropertyGroup Condition="'$(Configuration)'=='Release'">
+		<DebugType>none</DebugType>
+		<DebugSymbols>false</DebugSymbols>
+	</PropertyGroup>
+</Project>
\ No newline at end of file
diff --git a/FastGithub.Core/FastGithub.Core.csproj b/FastGithub.Core/FastGithub.Core.csproj
index bbb414c..e89fd2b 100644
--- a/FastGithub.Core/FastGithub.Core.csproj
+++ b/FastGithub.Core/FastGithub.Core.csproj
@@ -2,7 +2,6 @@
 
 	<PropertyGroup>
 		<TargetFramework>net5.0</TargetFramework>
-		<Nullable>enable</Nullable>
 		<RootNamespace>FastGithub</RootNamespace>
 	</PropertyGroup>
 
diff --git a/FastGithub.Dns/FastGithub.Dns.csproj b/FastGithub.Dns/FastGithub.Dns.csproj
index fa0e740..7165c3c 100644
--- a/FastGithub.Dns/FastGithub.Dns.csproj
+++ b/FastGithub.Dns/FastGithub.Dns.csproj
@@ -2,7 +2,6 @@
 
 	<PropertyGroup>
 		<TargetFramework>net5.0</TargetFramework>
-		<Nullable>enable</Nullable>
 	</PropertyGroup>
 
 	<ItemGroup>
diff --git a/FastGithub.Scanner/FastGithub.Scanner.csproj b/FastGithub.Scanner/FastGithub.Scanner.csproj
index 8c98877..5d205ef 100644
--- a/FastGithub.Scanner/FastGithub.Scanner.csproj
+++ b/FastGithub.Scanner/FastGithub.Scanner.csproj
@@ -2,7 +2,6 @@
 
 	<PropertyGroup>
 		<TargetFramework>net5.0</TargetFramework>
-		<Nullable>enable</Nullable>
 	</PropertyGroup>
 
 	<ItemGroup>
@@ -10,11 +9,11 @@
 		<PackageReference Include="IPNetwork2" Version="2.5.320" />
 		<PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="5.0.0" />
 		<PackageReference Include="Microsoft.Extensions.Hosting" Version="5.0.0" />
-		<PackageReference Include="Microsoft.Extensions.Http" Version="5.0.0" /> 
+		<PackageReference Include="Microsoft.Extensions.Http" Version="5.0.0" />
 	</ItemGroup>
 
 	<ItemGroup>
-	  <ProjectReference Include="..\FastGithub.Core\FastGithub.Core.csproj" />
+		<ProjectReference Include="..\FastGithub.Core\FastGithub.Core.csproj" />
 	</ItemGroup>
 
 </Project>
diff --git a/FastGithub.Upgrade/FastGithub.Upgrade.csproj b/FastGithub.Upgrade/FastGithub.Upgrade.csproj
index d44a067..ddaba9e 100644
--- a/FastGithub.Upgrade/FastGithub.Upgrade.csproj
+++ b/FastGithub.Upgrade/FastGithub.Upgrade.csproj
@@ -2,7 +2,6 @@
 
 	<PropertyGroup>
 		<TargetFramework>net5.0</TargetFramework>
-		<Nullable>enable</Nullable>
 	</PropertyGroup>
 
 	<ItemGroup>
diff --git a/FastGithub/FastGithub.csproj b/FastGithub/FastGithub.csproj
index c2f93c1..370e3a8 100644
--- a/FastGithub/FastGithub.csproj
+++ b/FastGithub/FastGithub.csproj
@@ -2,12 +2,8 @@
 
 	<PropertyGroup>
 		<OutputType>Exe</OutputType>
-		<Nullable>enable</Nullable>
 		<TargetFrameworks>net5.0;net6.0</TargetFrameworks>
-		<Version>1.0.0-rc2</Version>
-		<Description>github定制版的dns服务，解析github最优的ip</Description>
 		<PackageLicenseExpression>MIT</PackageLicenseExpression>
-		<Copyright>https://github.com/xljiulang/FastGithub</Copyright>
 	</PropertyGroup>
 
 	<PropertyGroup Condition="'$(TargetFramework)' == 'net6.0'">