diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0420edc..87649c3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
       MOZC_SHA: ${{ env.MOZC_SHA }}
       message: ${{ steps.commit-message.outputs.message }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-python@v6
         with:
diff --git a/.github/workflows/debug.yml b/.github/workflows/debug.yml
index c44c77c..b43e037 100644
--- a/.github/workflows/debug.yml
+++ b/.github/workflows/debug.yml
@@ -12,7 +12,7 @@ jobs:
         arch: [arm64, x86_64]
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Install dependencies
         env:
diff --git a/.github/workflows/js.yml b/.github/workflows/js.yml
index c90ab30..3fb6dd8 100644
--- a/.github/workflows/js.yml
+++ b/.github/workflows/js.yml
@@ -14,18 +14,18 @@ jobs:
     env:
       EMSCRIPTEN_VERSION: '4.0.20'
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           submodules: recursive
 
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           submodules: recursive
           repository: google/mozc
           path: fcitx5-mozc/mozc
           ref: ${{ inputs.mozc_sha }}
 
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           repository: emscripten-core/emsdk
           path: emsdk
@@ -98,7 +98,7 @@ jobs:
           - { os: macos-26 }
           - { os: windows-2025 }
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-node@v6
         with:
diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 6f15df7..6711575 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -19,11 +19,11 @@ jobs:
           - { arch: x86_64, goarch: amd64 }
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           submodules: recursive
 
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           submodules: recursive
           repository: google/mozc
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 7ea2e3d..fc79a2f 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -15,7 +15,7 @@ jobs:
           - { arch: arm64, cmake_arch: ARM64, pkg_arch: aarch64 }
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           submodules: recursive