diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index 95a124e..262389b 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v2
 
       - name: Setup mdBook
-        uses: peaceiris/actions-mdbook@v1
+        uses: peaceiris/actions-mdbook@v2
         with:
           mdbook-version: '0.4.4'
           # mdbook-version: 'latest'