diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 614be93..3496a9e 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v7
       - uses: actions/setup-dotnet@v6
         with:
-          dotnet-version: 10.0.403
+          dotnet-version: 10.0.404
       # TUnit はテストプロジェクト自体が実行ファイル
       - run: dotnet run --project tests/Aizuchi.Tests.csproj
       - name: Helm lint