diff --git a/.github/workflows/deploy_bookdown.yml b/.github/workflows/deploy_bookdown.yml
index f654318..34edb0f 100644
--- a/.github/workflows/deploy_bookdown.yml
+++ b/.github/workflows/deploy_bookdown.yml
@@ -22,7 +22,7 @@ jobs:
     name: Render-Book
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: r-lib/actions/setup-r@v2
       - uses: r-lib/actions/setup-pandoc@v2
       - uses: r-lib/actions/setup-tinytex@v2