diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7d348b0..2421b48 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -75,7 +75,7 @@ jobs:
       SUFFIX: linux-${{ matrix.arch }}
     steps:
       - name: Clone repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install packages
@@ -138,7 +138,7 @@ jobs:
       SUFFIX: macos-${{ matrix.arch }}
     steps:
       - name: Clone repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install packages
@@ -211,7 +211,7 @@ jobs:
         run: git config --system core.autocrlf false
         shell: bash
       - name: Clone repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           submodules: true
       - uses: msys2/setup-msys2@v2
@@ -265,7 +265,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Clone repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install packages
@@ -300,7 +300,7 @@ jobs:
     if: startsWith(github.ref, 'refs/tags/jq-')
     steps:
       - name: Clone repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Download executables
         uses: actions/download-artifact@v3
         with:
@@ -361,7 +361,7 @@ jobs:
     if: startsWith(github.ref, 'refs/tags/jq-')
     steps:
       - name: Clone repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Download artifacts
         uses: actions/download-artifact@v3
       - name: Upload release
diff --git a/.github/workflows/decnum.yml b/.github/workflows/decnum.yml
index 209d6d4..84b4dfa 100644
--- a/.github/workflows/decnum.yml
+++ b/.github/workflows/decnum.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Clone repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install packages
diff --git a/.github/workflows/manpage.yml b/.github/workflows/manpage.yml
index 72f1057..458de42 100644
--- a/.github/workflows/manpage.yml
+++ b/.github/workflows/manpage.yml
@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Setup Python
         uses: actions/setup-python@v5
         with:
diff --git a/.github/workflows/oniguruma.yml b/.github/workflows/oniguruma.yml
index d4a7be3..4e0c63f 100644
--- a/.github/workflows/oniguruma.yml
+++ b/.github/workflows/oniguruma.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Clone repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Install packages
         run: |
           sudo apt-get update
@@ -44,7 +44,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Clone repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Install packages
         run: |
           sudo apt-get update
diff --git a/.github/workflows/scanbuild.yml b/.github/workflows/scanbuild.yml
index f22b0c1..1a64954 100644
--- a/.github/workflows/scanbuild.yml
+++ b/.github/workflows/scanbuild.yml
@@ -23,7 +23,7 @@ jobs:
                       cflags: ''
         steps:
             - name: Clone repository
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
             - name: Open Submodule(s)
               run: |
                 git submodule update --init --recursive
diff --git a/.github/workflows/valgrind.yml b/.github/workflows/valgrind.yml
index 76c3c3e..a765d4d 100644
--- a/.github/workflows/valgrind.yml
+++ b/.github/workflows/valgrind.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Clone repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install packages
diff --git a/.github/workflows/website.yml b/.github/workflows/website.yml
index b69ea43..eee2bf8 100644
--- a/.github/workflows/website.yml
+++ b/.github/workflows/website.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Setup Python