diff --git a/.github/workflows/actionlint.yml b/.github/workflows/actionlint.yml
index a542c164..d523f49e 100644
--- a/.github/workflows/actionlint.yml
+++ b/.github/workflows/actionlint.yml
@@ -9,7 +9,7 @@ jobs:
   actionlint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
+      - uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
       - uses: reviewdog/action-actionlint@v1
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 647267f4..7792c1da 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -27,15 +27,15 @@ jobs:
       fail-fast: false
 
     steps:
-      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
+      - uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
 
       - name: checkout the submodules
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
+        uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
         with:
           submodules: recursive
 
       - name: checkout S2E AOBC
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
+        uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
         with:
           path: s2e-aobc
           repository: ut-issl/s2e-aobc
@@ -107,15 +107,15 @@ jobs:
         compiler: ['gcc-11 g++-11'] # , 'clang clang++'] # 一旦clangは外す
 
     steps:
-      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
+      - uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
 
       - name: checkout the submodules
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
+        uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
         with:
           submodules: recursive
 
       - name: checkout S2E AOBC
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
+        uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
         with:
           path: s2e-aobc
           repository: ut-issl/s2e-aobc
diff --git a/.github/workflows/labeler.yml b/.github/workflows/labeler.yml
index 376bcb05..37f76cdf 100644
--- a/.github/workflows/labeler.yml
+++ b/.github/workflows/labeler.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
+      - uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
 
       - name: Run Labeler
         uses: crazy-max/ghaction-github-labeler@v5