diff --git a/.github/workflows/github-pages.yml b/.github/workflows/github-pages.yml
index 9bcf006..8068e26 100644
--- a/.github/workflows/github-pages.yml
+++ b/.github/workflows/github-pages.yml
@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@v4
       - name: Build
         run: |
-          apk add mdbook
+          apk add mdbook tar
           mdbook build
       - uses: actions/upload-pages-artifact@v2
         with: