diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2053b7e..627dad5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - name: Fetch lecture-python-programming.myst
         shell: bash -l {0}
         run: |
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 1a6f7c2..927f386 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -63,7 +63,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up Python 3.10
         uses: actions/setup-python@v4
         with: