diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index d66a5458..795946e4 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -12,7 +12,7 @@ jobs:
         toxenv: [lint, docs-lint, pycodestyle]
         python-version: [ "3.10" ]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Using Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
         with:
diff --git a/.github/workflows/tox.yml b/.github/workflows/tox.yml
index 71e0ca76..d253148f 100644
--- a/.github/workflows/tox.yml
+++ b/.github/workflows/tox.yml
@@ -12,7 +12,7 @@ jobs:
         os: [ubuntu-latest, macos-latest] # All OSes pass except Windows because tests need Unix-only fcntl, grp, pwd, etc.
         python-version: [ "3.7", "3.8", "3.9", "3.10", "3.11", "pypy-3.8" ]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Using Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
         with: