diff --git a/src/Aiursoft.ChessServer/Aiursoft.ChessServer.csproj b/src/Aiursoft.ChessServer/Aiursoft.ChessServer.csproj
index d1a440a..f3f3182 100644
--- a/src/Aiursoft.ChessServer/Aiursoft.ChessServer.csproj
+++ b/src/Aiursoft.ChessServer/Aiursoft.ChessServer.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <AssemblyName>Aiursoft.ChessServer</AssemblyName>
     <RootNamespace>Aiursoft.ChessServer</RootNamespace>
     <IsTestProject>false</IsTestProject>
@@ -10,8 +10,8 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Aiursoft.AiurObserver.Extensions" Version="7.0.26" />
-    <PackageReference Include="Aiursoft.AiurObserver.WebSocket.Server" Version="7.0.26" />
+    <PackageReference Include="Aiursoft.AiurObserver.Extensions" Version="8.0.0" />
+    <PackageReference Include="Aiursoft.AiurObserver.WebSocket.Server" Version="8.0.0" />
     <PackageReference Include="Aiursoft.Scanner" Version="7.0.2" />
     <PackageReference Include="Aiursoft.WebTools" Version="7.0.35" />
     <PackageReference Include="Gera.Chess" Version="1.0.5" />