diff --git a/tests/VoicevoxCoreSharp.Core.Tests/VoicevoxCoreSharp.Core.Tests.csproj b/tests/VoicevoxCoreSharp.Core.Tests/VoicevoxCoreSharp.Core.Tests.csproj
index ed06bdd..16f8896 100644
--- a/tests/VoicevoxCoreSharp.Core.Tests/VoicevoxCoreSharp.Core.Tests.csproj
+++ b/tests/VoicevoxCoreSharp.Core.Tests/VoicevoxCoreSharp.Core.Tests.csproj
@@ -13,8 +13,8 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.ML.OnnxRuntime" Version="$(VoicevoxOnnxRuntimeVersion)" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
-    <PackageReference Include="xunit" Version="2.8.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.0">
+    <PackageReference Include="xunit" Version="2.8.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.1">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>