diff --git a/.github/workflows/bump.yml b/.github/workflows/bump.yml
index e438a9d..298e323 100644
--- a/.github/workflows/bump.yml
+++ b/.github/workflows/bump.yml
@@ -46,7 +46,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
index 5e093a0..515a3fb 100644
--- a/.github/workflows/format.yml
+++ b/.github/workflows/format.yml
@@ -32,7 +32,7 @@ jobs:
   format:
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           ref: ${{ github.head_ref }}
 
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index af7b749..966a69f 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -5,7 +5,7 @@ jobs:
   actionlint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Check workflow files
         uses: docker://rhysd/actionlint:1.7.7
         with: