diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0af6bf5..3c0e5ef 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -4,7 +4,7 @@ on:
   push:
     branches: [ "main" ]
   pull_request:
-    branches: [ "main" ]
+    branches: [ "main", "staging" ]
 
 jobs:
   test-net6:
@@ -15,9 +15,9 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Build
-        run: dotnet build src/Cnblogs.DashScope.AspNetCore -c Release
+        run: dotnet build src/Cnblogs.DashScope.AspNetCore -c Release -p:TargetFramework=net6.0
       - name: Test
-        run: dotnet test test/Cnblogs.DashScope.Sdk.UnitTests -c Release
+        run: dotnet test test/Cnblogs.DashScope.Sdk.UnitTests -c Release -p:TargetFramework=net6.0
   test-net8:
     runs-on: ubuntu-latest
     container: mcr.microsoft.com/dotnet/sdk:8.0
diff --git a/src/Cnblogs.DashScope.AI/Cnblogs.DashScope.AI.csproj b/src/Cnblogs.DashScope.AI/Cnblogs.DashScope.AI.csproj
index 4685740..2421d51 100644
--- a/src/Cnblogs.DashScope.AI/Cnblogs.DashScope.AI.csproj
+++ b/src/Cnblogs.DashScope.AI/Cnblogs.DashScope.AI.csproj
@@ -1,6 +1,5 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
     <Product>Cnblogs.DashScope.AI</Product>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <PackageTags>Cnblogs;Dashscope;Microsoft.Extensions.AI;Sdk;Embedding;</PackageTags>
diff --git a/src/Cnblogs.DashScope.Core/Cnblogs.DashScope.Core.csproj b/src/Cnblogs.DashScope.Core/Cnblogs.DashScope.Core.csproj
index 7dd23dd..837c127 100644
--- a/src/Cnblogs.DashScope.Core/Cnblogs.DashScope.Core.csproj
+++ b/src/Cnblogs.DashScope.Core/Cnblogs.DashScope.Core.csproj
@@ -13,7 +13,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.DeepDev.TokenizerLib" Version="1.3.3" />
-    <PackageReference Include="System.Text.Json" Version="8.0.6" />
+    <PackageReference Include="System.Text.Json" Version="8.0.0" Condition="'$(TargetFramework)' == 'net6.0'" />
   </ItemGroup>
 
 </Project>
diff --git a/Directory.Build.props b/src/Directory.Build.props
similarity index 94%
rename from Directory.Build.props
rename to src/Directory.Build.props
index 3eaabd9..c98ba0c 100644
--- a/Directory.Build.props
+++ b/src/Directory.Build.props
@@ -1,6 +1,6 @@
 <Project>
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFrameworks>net6.0;net8.0</TargetFrameworks>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
     <Authors>Cnblogs</Authors>
diff --git a/test/Directory.Build.props b/test/Directory.Build.props
new file mode 100644
index 0000000..aed0aa4
--- /dev/null
+++ b/test/Directory.Build.props
@@ -0,0 +1,8 @@
+<Project>
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+</Project>