diff --git a/.github/workflows/ci_workflow.yml b/.github/workflows/ci_workflow.yml
index 7bddcbe..941d597 100644
--- a/.github/workflows/ci_workflow.yml
+++ b/.github/workflows/ci_workflow.yml
@@ -22,7 +22,7 @@ jobs:
         python-version: [3.9]
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
       with:
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index ab5ddc5..b76f908 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -17,7 +17,7 @@ jobs:
       PIP_CONSTRAINT: .github/workflows/constraints.txt
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3.5.2
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0