diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index d7cd288..252b70b 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -24,7 +24,7 @@ jobs:
       - name: Install tox
         run: python3 -m pip install --user "tox>=4.0.0"
       - name: Check out src from Git
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0 # needed by setuptools-scm
       - name: Build dists
diff --git a/.github/workflows/tox.yml b/.github/workflows/tox.yml
index 21caca4..4c03ea1 100644
--- a/.github/workflows/tox.yml
+++ b/.github/workflows/tox.yml
@@ -49,7 +49,7 @@ jobs:
       PYTEST_REQPASS: 1
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0 # needed by setuptools-scm
 
@@ -130,7 +130,7 @@ jobs:
           jobs: ${{ toJSON(needs) }}
 
       - name: Check out src from Git
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Notify repository owners about lint change affecting them
         uses: sourcegraph/codenotify@v0.6.4