diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e3707b0..ed99c16 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,7 @@
         python-version: ["3.7", "3.8", "3.11"]  # no particular need for 3.9 or 3.10
         os: [macos-latest, ubuntu-latest, windows-latest]
     steps:
-    - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744  # v3.6.0
+    - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac  # v4.0.0
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@61a6322f88396a6271a6ee3565807d608ecaddd1  # v4.6.0
       with:
diff --git a/.github/workflows/pre-commit-autoupdate.yml b/.github/workflows/pre-commit-autoupdate.yml
index 205e782..23eeed1 100644
--- a/.github/workflows/pre-commit-autoupdate.yml
+++ b/.github/workflows/pre-commit-autoupdate.yml
@@ -19,7 +19,7 @@
     name: Detect outdated pre-commit hooks
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744  # v3.6.0
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac  # v4.0.0
 
       - name: Set up Python 3.11
         uses: actions/setup-python@61a6322f88396a6271a6ee3565807d608ecaddd1  # v4.7.0
diff --git a/.github/workflows/pre-commit.yml b/.github/workflows/pre-commit.yml
index ed0d802..22097c6 100644
--- a/.github/workflows/pre-commit.yml
+++ b/.github/workflows/pre-commit.yml
@@ -19,7 +19,7 @@
     name: Run pre-commit
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744  # v3.6.0
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac  # v4.0.0
 
       - uses: actions/setup-python@61a6322f88396a6271a6ee3565807d608ecaddd1  # v4.7.0
         with: