diff --git a/_quarto.yml b/_quarto.yml
index 3e4644d..983c4f7 100644
--- a/_quarto.yml
+++ b/_quarto.yml
@@ -13,6 +13,7 @@ book:
     right: |
       This book was built with <a href="https://quarto.org/">Quarto</a>.
   cover-image: cover.png
+  favicon: cover.png
   site-url: https://r4ds.hadley.nz/
   repo-url: https://github.com/hadley/r4ds/
   repo-branch: main