diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index ad3750e..9651566 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -11,7 +11,7 @@ jobs:
   benchmark:
     runs-on: ubuntu-24.04
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
     - uses: actions/setup-python@v6
       with:
         python-version: '3.14'
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 101dd61..a03e7d8 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -14,7 +14,7 @@ jobs:
   build-sdist:
     runs-on: ubuntu-24.04
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
     - uses: actions/setup-python@v6
       with:
         python-version: '3.14'
@@ -41,7 +41,7 @@ jobs:
         - 'pypy-3.10'
         - 'pypy-3.11'
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
     - uses: actions/setup-python@v6
       with:
         python-version: "${{ matrix.python-version }}"
@@ -66,7 +66,7 @@ jobs:
         - cp313-cp313
         - pp311-pypy311_pp73
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
     - run: /opt/python/${{ matrix.python-version }}/bin/python -m pip install setuptools
     - run: /opt/python/${{ matrix.python-version }}/bin/python -m pip wheel .
     - run: auditwheel repair arc4-*-linux*.whl --plat manylinux_2_28_x86_64
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 07985bd..44010b8 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -17,7 +17,7 @@ jobs:
         - 'pypy-3.10'
         - 'pypy-3.11'
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
     - uses: actions/setup-python@v6
       with:
         python-version: "${{ matrix.python-version }}"
@@ -41,7 +41,7 @@ jobs:
     runs-on: ubuntu-24.04
     needs: test
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
     - uses: actions/download-artifact@v8
       with:
         pattern: coverages-*
@@ -54,7 +54,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
     - name: clang-format
       run: clang-format --Werror --dry-run arc4.c
     - run: pip install . flake8 mypy pygments restructuredtext_lint