diff --git a/.github/workflows/ci.pr.yml b/.github/workflows/ci.pr.yml
index beba835..0826b6d 100644
--- a/.github/workflows/ci.pr.yml
+++ b/.github/workflows/ci.pr.yml
@@ -15,7 +15,7 @@ jobs:
         os: [macos-12, windows-2022, ubuntu-22.04]
     steps:
       - name: git clone
-        uses: actions/checkout@v3.6.0
+        uses: actions/checkout@v4.1.1
       - name: Set up JDKs
         uses: actions/setup-java@v3.13.0
         with:
diff --git a/.github/workflows/ci.push.yml b/.github/workflows/ci.push.yml
index 9a23421..1eaab34 100644
--- a/.github/workflows/ci.push.yml
+++ b/.github/workflows/ci.push.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: git clone
-        uses: actions/checkout@v3.6.0
+        uses: actions/checkout@v4.1.1
       - name: Set up JDKs
         uses: actions/setup-java@v3.13.0
         with:
diff --git a/.github/workflows/ci.release.yml b/.github/workflows/ci.release.yml
index fc3b9a3..ed2b03d 100644
--- a/.github/workflows/ci.release.yml
+++ b/.github/workflows/ci.release.yml
@@ -24,7 +24,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: git clone
-        uses: actions/checkout@v3.6.0
+        uses: actions/checkout@v4.1.1
       - name: Set up JDKs
         uses: actions/setup-java@v3.13.0
         with: