diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3575325..d845868 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,7 @@ jobs:
           - 8529/tcp
     steps:
       - name: check out code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: set up golang
         uses: actions/setup-go@v6
         with:
diff --git a/.github/workflows/create-pull-request.yml b/.github/workflows/create-pull-request.yml
index d831371..df53200 100644
--- a/.github/workflows/create-pull-request.yml
+++ b/.github/workflows/create-pull-request.yml
@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-20.04
     if: github.actor != 'dependabot[bot]'
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: get branch name
         id: vars
         run: |
diff --git a/.github/workflows/testcov.yml b/.github/workflows/testcov.yml
index 04f4674..de30684 100644
--- a/.github/workflows/testcov.yml
+++ b/.github/workflows/testcov.yml
@@ -17,7 +17,7 @@ jobs:
           go-version: '~1.23'
       - run: go version
       - name: check out code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: unit test
         run: go test -covermode=atomic -coverprofile=profile.cov -v ./...
         env: