diff --git a/.github/workflows/go-lint.yml b/.github/workflows/go-lint.yml
index 7861c84..e3ca1a9 100644
--- a/.github/workflows/go-lint.yml
+++ b/.github/workflows/go-lint.yml
@@ -43,7 +43,7 @@ jobs:
   go-lint: # NOTE: for Branch protection rule `Status checks that are required.`
     runs-on: ubuntu-latest # ref. https://docs.github.com/en/free-pro-team@latest/actions/reference/workflow-syntax-for-github-actions#jobsjob_idruns-on
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: DEBUG
         run: |
           cat <<'DEBUG_DOC'
diff --git a/.github/workflows/go-test.yml b/.github/workflows/go-test.yml
index e490414..db050df 100644
--- a/.github/workflows/go-test.yml
+++ b/.github/workflows/go-test.yml
@@ -43,7 +43,7 @@ jobs:
   go-test: # NOTE: for Branch protection rule `Status checks that are required.`
     runs-on: ubuntu-latest # ref. https://docs.github.com/en/free-pro-team@latest/actions/reference/workflow-syntax-for-github-actions#jobsjob_idruns-on
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: DEBUG
         run: |
           cat <<'DEBUG_DOC'