diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 19c910b..336c643 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Configure git
         run: |
           git config --global user.name "Tomohiko Ozawa"
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 7df46bc..6f01963 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -23,7 +23,7 @@ jobs:
     name: Typical Usage of OpenVPN
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Install OpenVPN
         run: |
           sudo apt update