diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fa3fe69..fb39488 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -147,7 +147,7 @@ jobs:
           destination_dir: api
 
       - name: Setup mdBook
-        uses: peaceiris/actions-mdbook@v1.1.14
+        uses: peaceiris/actions-mdbook@v1.2.0
         with:
           mdbook-version: latest