diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index a314985..6553fd7 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/publish-slides.yaml b/.github/workflows/publish-slides.yaml
index 5d671e5..f6899b5 100644
--- a/.github/workflows/publish-slides.yaml
+++ b/.github/workflows/publish-slides.yaml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up quarto
         uses: quarto-dev/quarto-actions/setup@v2