diff --git a/.github/workflows/unittest.yml b/.github/workflows/unittest.yml
index 39329f6..e0eb592 100644
--- a/.github/workflows/unittest.yml
+++ b/.github/workflows/unittest.yml
@@ -11,7 +11,7 @@ jobs:
     name: GitHub Action
     steps:
     - name: Checkout
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
     - name: Install dependencies
       run: |
         python -m pip install -r requirements.txt -r requirements-dev.txt