diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 31ade291..2e2ea56e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -75,7 +75,7 @@ jobs:
       SUFFIX: linux-${{ matrix.arch }}
     steps:
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install packages
@@ -136,7 +136,7 @@ jobs:
       SUFFIX: macos-${{ matrix.arch }}
     steps:
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install packages
@@ -213,7 +213,7 @@ jobs:
         run: git config --system core.autocrlf false
         shell: bash
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           submodules: true
       - uses: msys2/setup-msys2@v2
@@ -266,7 +266,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install packages
@@ -302,7 +302,7 @@ jobs:
     needs: linux
     steps:
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Download executables
         uses: actions/download-artifact@v6
         with:
@@ -377,7 +377,7 @@ jobs:
     if: startsWith(github.ref, 'refs/tags/jq-')
     steps:
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Download artifacts
         uses: actions/download-artifact@v6
         with:
diff --git a/.github/workflows/decnum.yml b/.github/workflows/decnum.yml
index a7dfd5e3..bbf9389d 100644
--- a/.github/workflows/decnum.yml
+++ b/.github/workflows/decnum.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install packages
diff --git a/.github/workflows/manpage.yml b/.github/workflows/manpage.yml
index fcdb18a2..9c77b7ec 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@v5
+        uses: actions/checkout@v6
       - name: Setup Python
         uses: actions/setup-python@v6
         with:
diff --git a/.github/workflows/oniguruma.yml b/.github/workflows/oniguruma.yml
index b503e847..a7cbf6ef 100644
--- a/.github/workflows/oniguruma.yml
+++ b/.github/workflows/oniguruma.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Install packages
         run: |
           sudo apt-get update
@@ -45,7 +45,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Clone repository
-        uses: actions/checkout@v5
+        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 92774d03..dfd0a212 100644
--- a/.github/workflows/scanbuild.yml
+++ b/.github/workflows/scanbuild.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install packages
diff --git a/.github/workflows/valgrind.yml b/.github/workflows/valgrind.yml
index 19af84f9..815a9b67 100644
--- a/.github/workflows/valgrind.yml
+++ b/.github/workflows/valgrind.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Clone repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install packages
diff --git a/.github/workflows/website.yml b/.github/workflows/website.yml
index b4132339..db084e1d 100644
--- a/.github/workflows/website.yml
+++ b/.github/workflows/website.yml
@@ -15,7 +15,7 @@ jobs:
         working-directory: docs
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Setup Python
         uses: actions/setup-python@v6
         with: