diff --git a/src/Luban.Client/Luban.Client.csproj b/src/Luban.Client/Luban.Client.csproj
index 352b043..bec2f38 100644
--- a/src/Luban.Client/Luban.Client.csproj
+++ b/src/Luban.Client/Luban.Client.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/Luban.Common/Luban.Common.csproj b/src/Luban.Common/Luban.Common.csproj
index 2cc6075..04d9d3f 100644
--- a/src/Luban.Common/Luban.Common.csproj
+++ b/src/Luban.Common/Luban.Common.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/Luban.Job.Cfg/Luban.Job.Cfg.csproj b/src/Luban.Job.Cfg/Luban.Job.Cfg.csproj
index dc8ade6..b269046 100644
--- a/src/Luban.Job.Cfg/Luban.Job.Cfg.csproj
+++ b/src/Luban.Job.Cfg/Luban.Job.Cfg.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Library</OutputType>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/Luban.Job.Common/Luban.Job.Common.csproj b/src/Luban.Job.Common/Luban.Job.Common.csproj
index 0c61ba4..ec9a2ad 100644
--- a/src/Luban.Job.Common/Luban.Job.Common.csproj
+++ b/src/Luban.Job.Common/Luban.Job.Common.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/Luban.Server.Common/Luban.Server.Common.csproj b/src/Luban.Server.Common/Luban.Server.Common.csproj
index ff856f2..1e9af7a 100644
--- a/src/Luban.Server.Common/Luban.Server.Common.csproj
+++ b/src/Luban.Server.Common/Luban.Server.Common.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/Luban.Server/Luban.Server.csproj b/src/Luban.Server/Luban.Server.csproj
index 27e19e9..e344b9b 100644
--- a/src/Luban.Server/Luban.Server.csproj
+++ b/src/Luban.Server/Luban.Server.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">