diff --git a/.github/workflows/on-pull-request.yaml b/.github/workflows/on-pull-request.yaml
index eb2268a..c62d596 100644
--- a/.github/workflows/on-pull-request.yaml
+++ b/.github/workflows/on-pull-request.yaml
@@ -12,7 +12,7 @@ jobs:
     name: CodeQL
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: github/codeql-action/init@v4
         with:
           languages: go
diff --git a/.github/workflows/on-push-main.yaml b/.github/workflows/on-push-main.yaml
index fc40cc8..b72ff24 100644
--- a/.github/workflows/on-push-main.yaml
+++ b/.github/workflows/on-push-main.yaml
@@ -14,7 +14,7 @@ jobs:
     name: CodeQL
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: github/codeql-action/init@v4
         with:
           languages: go
diff --git a/.github/workflows/on-release.yaml b/.github/workflows/on-release.yaml
index 701da45..cf58f8c 100644
--- a/.github/workflows/on-release.yaml
+++ b/.github/workflows/on-release.yaml
@@ -14,7 +14,7 @@ jobs:
     name: CodeQL
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: github/codeql-action/init@v4
         with:
           languages: go
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 0296b50..2baac82 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -11,7 +11,7 @@ jobs:
       - uses: actions/setup-go@v6
         with:
           go-version: 1.25.x
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Install upx-ucl
@@ -30,7 +30,7 @@ jobs:
       matrix:
         base: [scratch, alpine, ubuntu]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: docker/setup-qemu-action@v3
       - uses: docker/setup-buildx-action@v3
 
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index a04c936..6b35d9b 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -8,7 +8,7 @@ jobs:
     name: Linux
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Test
         run: go test -coverprofile=cov -covermode=atomic -tags=githubci ./...
       - uses: codecov/codecov-action@v5
@@ -23,7 +23,7 @@ jobs:
       - uses: actions/setup-go@v6
         with:
           go-version: 1.25.x
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Test
         run: go test -race -coverprofile=cov -covermode=atomic -tags=githubci ./...
       - uses: codecov/codecov-action@v5
@@ -38,7 +38,7 @@ jobs:
       - uses: actions/setup-go@v6
         with:
           go-version: 1.25.x
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Test
         run: go test -coverprofile=cov -covermode=atomic -tags=githubci ./...
       - uses: codecov/codecov-action@v5