diff --git a/.github/workflows/deploy_book.yml b/.github/workflows/deploy_book.yml
index 78d5dba..c32447e 100644
--- a/.github/workflows/deploy_book.yml
+++ b/.github/workflows/deploy_book.yml
@@ -16,7 +16,7 @@ jobs:
         shell: bash -l {0}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/test_book.yml b/.github/workflows/test_book.yml
index 36b5aa4..aa09476 100644
--- a/.github/workflows/test_book.yml
+++ b/.github/workflows/test_book.yml
@@ -16,7 +16,7 @@ jobs:
         shell: bash -l {0}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           persist-credentials: false