diff --git a/.github/workflows/ci.pr.yml b/.github/workflows/ci.pr.yml
index c2f09de..5cdcfad 100644
--- a/.github/workflows/ci.pr.yml
+++ b/.github/workflows/ci.pr.yml
@@ -17,7 +17,7 @@ jobs:
         os: [macos-12, windows-2022, ubuntu-22.04]
     steps:
       - name: git clone
-        uses: actions/checkout@v4.2.0
+        uses: actions/checkout@v4.2.1
       - name: Set up JDKs
         uses: actions/setup-java@v4.4.0
         with:
diff --git a/.github/workflows/ci.push.yml b/.github/workflows/ci.push.yml
index 6def1b3..fbceff3 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@v4.2.0
+        uses: actions/checkout@v4.2.1
       - name: Set up JDKs
         uses: actions/setup-java@v4.4.0
         with:
diff --git a/.github/workflows/ci.release.yml b/.github/workflows/ci.release.yml
index d04a8dc..a443099 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@v4.2.0
+        uses: actions/checkout@v4.2.1
       - name: Set up JDKs
         uses: actions/setup-java@v4.4.0
         with: