diff --git a/.github/workflows/mdbook.yaml b/.github/workflows/mdbook.yaml
index ad161470..ff963e80 100644
--- a/.github/workflows/mdbook.yaml
+++ b/.github/workflows/mdbook.yaml
@@ -18,7 +18,7 @@ jobs:
       - name: Setup mdBook
         uses: peaceiris/actions-mdbook@v1
         with:
-          mdbook-version: 'latest'
+          mdbook-version: "~0.4.25"
 
       - uses: jontze/action-mdbook@v2
         with: