diff --git a/.github/workflows/check_format.yml b/.github/workflows/check_format.yml
index e5fda33..dc1288f 100644
--- a/.github/workflows/check_format.yml
+++ b/.github/workflows/check_format.yml
@@ -14,7 +14,7 @@ jobs:
         python-version: [ "3.13" ]
         os: [ ubuntu-latest ]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install Dependencies
         run: |
           python -m pip install --upgrade pip
diff --git a/.github/workflows/packaging_test.yml b/.github/workflows/packaging_test.yml
index 8621140..5f673e5 100644
--- a/.github/workflows/packaging_test.yml
+++ b/.github/workflows/packaging_test.yml
@@ -14,7 +14,7 @@ jobs:
         python-version: ["3.10", "3.11", "3.12", "3.13"]
         os: [ubuntu-latest]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v6
         with:
diff --git a/.github/workflows/unittests.yml b/.github/workflows/unittests.yml
index 6819524..04fc96b 100644
--- a/.github/workflows/unittests.yml
+++ b/.github/workflows/unittests.yml
@@ -9,7 +9,7 @@ jobs:
         python-version: ["3.10", "3.11", "3.12", "3.13"]
         os: [ubuntu-latest]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v6
         with: