diff --git a/.github/workflows/acceptance.yml b/.github/workflows/acceptance.yml
index 5006f3b..6bac7d6 100644
--- a/.github/workflows/acceptance.yml
+++ b/.github/workflows/acceptance.yml
@@ -8,6 +8,6 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: npm ci
       - run: npm test
diff --git a/README.md b/README.md
index cdd575a..1d4e742 100644
--- a/README.md
+++ b/README.md
@@ -49,7 +49,7 @@ jobs:
   deploy:
     name: Deploy
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - run: # your delivery scripts
       - name: Success
         if: success()