diff --git a/.github/workflows/actionlint.yml b/.github/workflows/actionlint.yml
index 6ae48ff..c74de28 100644
--- a/.github/workflows/actionlint.yml
+++ b/.github/workflows/actionlint.yml
@@ -5,7 +5,7 @@ jobs:
   actionlint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - name: Download actionlint
         id: get_actionlint
         run: bash <(curl https://raw.githubusercontent.com/rhysd/actionlint/main/scripts/download-actionlint.bash)
diff --git a/.github/workflows/auto_release.yml b/.github/workflows/auto_release.yml
index 0c3825c..64b35be 100644
--- a/.github/workflows/auto_release.yml
+++ b/.github/workflows/auto_release.yml
@@ -18,7 +18,7 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
   release_tag:
     needs:
       - release
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ad71c4b..fbc4e9b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - uses: actions/setup-node@v3
         with:
           node-version: '16'
diff --git a/.github/workflows/check_swagger_update.yml b/.github/workflows/check_swagger_update.yml
index 7fbefd7..2314029 100644
--- a/.github/workflows/check_swagger_update.yml
+++ b/.github/workflows/check_swagger_update.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - uses: actions/setup-node@v3
         with:
           node-version: '16'
diff --git a/.github/workflows/gh-release.yml b/.github/workflows/gh-release.yml
index 1404b28..39c53c0 100644
--- a/.github/workflows/gh-release.yml
+++ b/.github/workflows/gh-release.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
         with:
           fetch-depth: 0
       - uses: actions/setup-node@v3
diff --git a/.github/workflows/release_tag.yml b/.github/workflows/release_tag.yml
index 99dd60b..cb309e6 100644
--- a/.github/workflows/release_tag.yml
+++ b/.github/workflows/release_tag.yml
@@ -9,7 +9,7 @@ jobs:
   release_tag:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
         with:
           fetch-depth: 0
       - name: Download nsv