diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 59d5c60c..4f0d6661 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -14,7 +14,7 @@ jobs:
   deploy-book:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
 
     # Install dependencies
     - name: Setup Miniconda