diff --git a/.github/workflows/deploy-book.yml b/.github/workflows/deploy-book.yml
index 5290efe..336a1ce 100644
--- a/.github/workflows/deploy-book.yml
+++ b/.github/workflows/deploy-book.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Install rsync
         run: sudo apt-get update && sudo apt-get install -y rsync