diff --git a/.github/workflows/black.yml b/.github/workflows/black.yml
index 5f8d919..efe6e26 100644
--- a/.github/workflows/black.yml
+++ b/.github/workflows/black.yml
@@ -14,7 +14,7 @@ jobs:
         python-version: ['3.9']
     
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v2
       with:
diff --git a/.github/workflows/flake8.yml b/.github/workflows/flake8.yml
index 532a29d..54b8129 100644
--- a/.github/workflows/flake8.yml
+++ b/.github/workflows/flake8.yml
@@ -14,7 +14,7 @@ jobs:
         python-version: ['3.9']
     
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v2
       with: