diff --git a/.github/workflows/check-changelog.yml b/.github/workflows/check-changelog.yml
index 2c9b08f..81433dd 100644
--- a/.github/workflows/check-changelog.yml
+++ b/.github/workflows/check-changelog.yml
@@ -15,7 +15,7 @@ jobs:
       !contains(github.event.pull_request.labels.*.name, 'dependencies') &&
       !contains(github.event.pull_request.labels.*.name, 'automation')
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Check that CHANGELOG is touched
         run: |
           git fetch origin ${{ github.base_ref }} --depth 1 && \
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 1639028..4090532 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -10,7 +10,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: run smoke tests
       run: bash run_tests.sh
   test-stack:
@@ -19,7 +19,7 @@ jobs:
         stack: [heroku-18, heroku-20, heroku-22]
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: run stack test
       run: bash test/stack-test.sh ${{ matrix.stack }}
       env: