diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index add34e0..1c0c133 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -18,7 +18,7 @@ jobs:
     steps:
       - name: Checkout
         id: checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0 # needed by setuptools-scm          
       - name: Setup Python
diff --git a/.github/workflows/tox.yml b/.github/workflows/tox.yml
index 51eb05f..26c5394 100644
--- a/.github/workflows/tox.yml
+++ b/.github/workflows/tox.yml
@@ -117,7 +117,7 @@ jobs:
 
     steps:
       - name: Check out src from Git
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0 # needed by setuptools-scm
       - name: Set up Python ${{ matrix.python-version }}
@@ -189,7 +189,7 @@ 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