diff --git a/.github/workflows/actionlint.yml b/.github/workflows/actionlint.yml
index e92922da3..653376720 100644
--- a/.github/workflows/actionlint.yml
+++ b/.github/workflows/actionlint.yml
@@ -13,5 +13,5 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: reviewdog/action-actionlint@v1
diff --git a/.github/workflows/backend.yml b/.github/workflows/backend.yml
index 4bd5c0ec3..a9bdb48fb 100644
--- a/.github/workflows/backend.yml
+++ b/.github/workflows/backend.yml
@@ -33,7 +33,7 @@ jobs:
       image: golang:1.24
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Install mysqldef
         run: |
           curl -fsSL https://github.com/k0kubun/sqldef/releases/download/v0.16.7/mysqldef_linux_amd64.tar.gz -o ./mysqldef.tar.gz
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 354069d03..b42bc802b 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -27,7 +27,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v3
         with:
diff --git a/.github/workflows/docker-publish.yml b/.github/workflows/docker-publish.yml
index 561ae181f..226cfd4ee 100644
--- a/.github/workflows/docker-publish.yml
+++ b/.github/workflows/docker-publish.yml
@@ -33,7 +33,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Setup Docker buildx
         id: buildx
         uses: docker/setup-buildx-action@v3
diff --git a/.github/workflows/frontend.yml b/.github/workflows/frontend.yml
index 6168d9e9a..baeb0441d 100644
--- a/.github/workflows/frontend.yml
+++ b/.github/workflows/frontend.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Install pnpm
         uses: pnpm/action-setup@v4.1.0
         with: