diff --git a/.github/workflows/depup.yml b/.github/workflows/depup.yml
index 329f09a..f3417a3 100644
--- a/.github/workflows/depup.yml
+++ b/.github/workflows/depup.yml
@@ -10,7 +10,7 @@ jobs:
   reviewdog:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: haya14busa/action-depup@v1
         id: depup
         with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 9dd2136..55dc437 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -14,7 +14,7 @@ jobs:
     if: github.event.action != 'labeled'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       # Bump version on merging Pull Requests with specific labels.
       # (bump:major,bump:minor,bump:patch)
@@ -50,6 +50,6 @@ jobs:
     if: github.event.action == 'labeled'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Post bumpr status comment
         uses: haya14busa/action-bumpr@v1
diff --git a/.github/workflows/reviewdog.yml b/.github/workflows/reviewdog.yml
index bee0c14..419b5db 100644
--- a/.github/workflows/reviewdog.yml
+++ b/.github/workflows/reviewdog.yml
@@ -9,7 +9,7 @@ jobs:
     name: runner / shellcheck
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: haya14busa/action-cond@v1
         id: reporter
         with:
@@ -26,7 +26,7 @@ jobs:
     name: runner / suggester / shell
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: install mvdan/sh
         run: |
           shfmtversion="v3.6.0"
@@ -56,7 +56,7 @@ jobs:
     name: runner / misspell
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: reviewdog/action-misspell@v1
         with:
           github_token: ${{ secrets.github_token }}
@@ -68,7 +68,7 @@ jobs:
     name: runner / alex
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: reviewdog/action-alex@v1
         with:
           github_token: ${{ secrets.github_token }}
@@ -79,7 +79,7 @@ jobs:
     name: runner / actionlint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: reviewdog/action-actionlint@v1
         with:
           github_token: ${{ secrets.github_token }}
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 6cf2186..79c2a23 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,7 +11,7 @@ jobs:
         platform: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.platform }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: install reviewdog (default)
         uses: ./
@@ -34,7 +34,7 @@ jobs:
     container:
       image: alpine:latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: install reviewdog
         uses: ./
       - run: reviewdog -version