diff --git a/.github/workflows/gh-pages.yaml b/.github/workflows/gh-pages.yaml
index 70ae4f69..b3ebf550 100644
--- a/.github/workflows/gh-pages.yaml
+++ b/.github/workflows/gh-pages.yaml
@@ -68,7 +68,7 @@ jobs:
           cp highlightjs/build/highlight.min.js main/doc/book/highlight.js
           cp highlightjs/build/highlight.min.js stable-v0.4/doc/book/highlight.js
       - name: Copy stable doc into main
-        run: mkdir main/doc/book/v0.4 && cp -r stable-v0.4/doc/book/ main/doc/book/v0.4
+        run: mkdir main/doc/book/v0.4 && cp -a stable-v0.4/doc/book/. main/doc/book/v0.4/
       - name: Debug print
         run: ls -la main/doc/book/v0.4
       - name: Upload artifact