diff --git a/.github/workflows/lint-and-fmt.yml b/.github/workflows/lint-and-fmt.yml
index e315c86..fbaa4bc 100644
--- a/.github/workflows/lint-and-fmt.yml
+++ b/.github/workflows/lint-and-fmt.yml
@@ -13,7 +13,7 @@ jobs:
     name: Python ${{ matrix.python-version }} on ${{ matrix.architecture }} test
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Install prettier
         run: |
diff --git a/.github/workflows/unit-test.yml b/.github/workflows/unit-test.yml
index a091a36..cdcf617 100644
--- a/.github/workflows/unit-test.yml
+++ b/.github/workflows/unit-test.yml
@@ -12,7 +12,7 @@ jobs:
     name: Python ${{ matrix.python-version }} on ${{ matrix.architecture }} test
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Install python
         uses: actions/setup-python@v4