diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c99f464..701eb38 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -23,7 +23,7 @@ jobs:
         shell: bash
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Setup Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
         with:
diff --git a/.github/workflows/code-style.yml b/.github/workflows/code-style.yml
index 928bab5..f5ea350 100644
--- a/.github/workflows/code-style.yml
+++ b/.github/workflows/code-style.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Setup Python 3.10
         uses: actions/setup-python@v5
         with:
diff --git a/.github/workflows/doc.yml b/.github/workflows/doc.yml
index dd20ab8..69c83ba 100644
--- a/.github/workflows/doc.yml
+++ b/.github/workflows/doc.yml
@@ -17,7 +17,7 @@ jobs:
         shell: bash
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           path: ./main
       - name: Setup Python 3.10
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index a301568..ef228b0 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Setup Python 3.10
         uses: actions/setup-python@v5
         with: