diff --git a/.github/workflows/check_urls.yml b/.github/workflows/check_urls.yml
index 3f6215d..40add0b 100644
--- a/.github/workflows/check_urls.yml
+++ b/.github/workflows/check_urls.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-20.04
     if: github.repository_owner == 'hwdsl2'
     steps:
-      - uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579 # 2.4.0
+      - uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8 # 3.1.0
         with:
           persist-credentials: false
       - name: Check
diff --git a/.github/workflows/shellcheck.yml b/.github/workflows/shellcheck.yml
index d6fb94e..f2bfeb4 100644
--- a/.github/workflows/shellcheck.yml
+++ b/.github/workflows/shellcheck.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-20.04
     if: github.repository_owner == 'hwdsl2'
     steps:
-      - uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579 # 2.4.0
+      - uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8 # 3.1.0
         with:
           persist-credentials: false
       - name: Check
diff --git a/.github/workflows/test_set_1.yml b/.github/workflows/test_set_1.yml
index 14f98ef..aff210f 100644
--- a/.github/workflows/test_set_1.yml
+++ b/.github/workflows/test_set_1.yml
@@ -22,7 +22,7 @@ jobs:
     env:
       OS_VERSION: ${{ matrix.os_version }}
     steps:
-      - uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579 # 2.4.0
+      - uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8 # 3.1.0
         with:
           persist-credentials: false
       - name: Build
diff --git a/.github/workflows/test_set_2.yml b/.github/workflows/test_set_2.yml
index a394064..98fd413 100644
--- a/.github/workflows/test_set_2.yml
+++ b/.github/workflows/test_set_2.yml
@@ -23,7 +23,7 @@ jobs:
       image: ${{ matrix.os_version }}
       options: --cap-add=NET_ADMIN --device=/dev/ppp
     steps:
-      - uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579 # 2.4.0
+      - uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8 # 3.1.0
         with:
           persist-credentials: false
       - name: Test