diff --git a/.github/workflows/deploy_handbook.yml b/.github/workflows/deploy_handbook.yml
index 85c9ea4..0acaef9 100644
--- a/.github/workflows/deploy_handbook.yml
+++ b/.github/workflows/deploy_handbook.yml
@@ -24,7 +24,7 @@ jobs:
       contents: write
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       # Install dependencies
       - name: Set up Python v3.10