diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index 83d3be3..52358b9 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -18,7 +18,7 @@ jobs:
           fetch-depth: 0   # we just need the latest commit
 
       - name: Setup mdBook
-        uses: peaceiris/actions-mdbook@v1
+        uses: peaceiris/actions-mdbook@v2
         with:
           mdbook-version: 'latest'