diff --git a/.github/workflows/depup.yml b/.github/workflows/depup.yml
index 3ab9a0f77..df41fe9df 100644
--- a/.github/workflows/depup.yml
+++ b/.github/workflows/depup.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           submodules: true
 
diff --git a/.github/workflows/generate.yml b/.github/workflows/generate.yml
index 186b3f078..3f44bd1b3 100644
--- a/.github/workflows/generate.yml
+++ b/.github/workflows/generate.yml
@@ -18,11 +18,11 @@ jobs:
           sudo apt-get -y install libfuse2
           echo "LD_PRELOAD=/lib/x86_64-linux-gnu/libgmodule-2.0.so" >> $GITHUB_ENV
       - name: checkout master
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           path: work
       - name: Checkout vimdoc-ja
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           path: target
           repository: 'vim-jp/vimdoc-ja'
@@ -82,11 +82,11 @@ jobs:
           sudo apt-get -y install libfuse2
           echo "LD_PRELOAD=/lib/x86_64-linux-gnu/libgmodule-2.0.so" >> $GITHUB_ENV
       - name: checkout master
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           path: work
       - name: Checkout vimdoc-ja
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           path: target
           repository: 'vim-jp/vimdoc-ja'
diff --git a/.github/workflows/report.yml b/.github/workflows/report.yml
index a04944d27..efda6c17a 100644
--- a/.github/workflows/report.yml
+++ b/.github/workflows/report.yml
@@ -20,11 +20,11 @@ jobs:
         uses: 1466587594/get-current-time@v2
         id: current-time
       - name: Checkout vimdoc-ja-working
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           path: work
       - name: Checkout vim
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           repository: vim/vim
           path: vim
diff --git a/.github/workflows/reviewdog.yml b/.github/workflows/reviewdog.yml
index 86a4f2ab1..aeea54be1 100644
--- a/.github/workflows/reviewdog.yml
+++ b/.github/workflows/reviewdog.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           submodules: true
       - name: nvcheck-github-pr-review
diff --git a/.github/workflows/vimhelptagcheck.yml b/.github/workflows/vimhelptagcheck.yml
index de36d6047..86749dba5 100644
--- a/.github/workflows/vimhelptagcheck.yml
+++ b/.github/workflows/vimhelptagcheck.yml
@@ -7,6 +7,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: help tag check
         uses: tsuyoshicho/action-vimhelp-tagname-check@v1