diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e7b03be..3619656 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
         with:
           go-version: '~1.22'
       - name: check out code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: unit test
         run: go test -parallel 4 -covermode=atomic -coverprofile=profile.cov -v ./...
         env:
diff --git a/.github/workflows/create-pull-request.yml b/.github/workflows/create-pull-request.yml
index 57980b5..d831371 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@v4
+      - uses: actions/checkout@v5
       - name: get branch name
         id: vars
         run: |
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 9ab1b3d..b77c939 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: check out code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - uses: actions/setup-go@v5
         with:
           go-version: '1.21'
diff --git a/.github/workflows/testcov.yml b/.github/workflows/testcov.yml
index 76e4bc6..2861173 100644
--- a/.github/workflows/testcov.yml
+++ b/.github/workflows/testcov.yml
@@ -16,7 +16,7 @@ jobs:
         with:
           go-version: '~1.21.6'
       - name: check out code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: unit test
         run: go test -parallel 4 -covermode=atomic -coverprofile=profile.cov -v ./...
         env: