diff --git a/.github/workflows/bookdown.yml b/.github/workflows/bookdown.yml
index cde0d4a..e3e35ca 100644
--- a/.github/workflows/bookdown.yml
+++ b/.github/workflows/bookdown.yml
@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       #- name: Setup upterm session
         #uses: lhotari/action-upterm@v1
@@ -83,10 +83,10 @@ jobs:
     needs: bookdown
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Download Artifact
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           # Artifact name
           name: _handbook                      # optional