diff --git a/tests/Aiursoft.ChessServer.Tests/Aiursoft.ChessServer.Tests.csproj b/tests/Aiursoft.ChessServer.Tests/Aiursoft.ChessServer.Tests.csproj
index 6803ed7..435d81e 100644
--- a/tests/Aiursoft.ChessServer.Tests/Aiursoft.ChessServer.Tests.csproj
+++ b/tests/Aiursoft.ChessServer.Tests/Aiursoft.ChessServer.Tests.csproj
@@ -16,7 +16,7 @@
     <PackageReference Include="JunitXml.TestLogger" Version="7.0.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.0" />
     <PackageReference Include="MSTest.TestAdapter" Version="4.0.1" />
-    <PackageReference Include="AngleSharp" Version="1.3.0" />
+    <PackageReference Include="AngleSharp" Version="1.3.1" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\src\Aiursoft.ChessServer\Aiursoft.ChessServer.csproj" />