diff --git a/.github/workflows/mdbook.yml b/.github/workflows/mdbook.yml
index 03766ad..68feffc 100644
--- a/.github/workflows/mdbook.yml
+++ b/.github/workflows/mdbook.yml
@@ -35,7 +35,7 @@ jobs:
     env:
       MDBOOK_VERSION: 0.4.36
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Install mdBook
         run: |
           curl --proto '=https' --tlsv1.2 https://sh.rustup.rs -sSf -y | sh