diff --git a/index.html b/index.html
index 6895ffb..e66cb47 100644
--- a/index.html
+++ b/index.html
@@ -309,6 +309,7 @@ <h2 data-toc-skip>Developers</h2>
 <div class="dev-status">
 <h2 data-toc-skip>Dev status</h2>
 <ul class="list-unstyled">
+<li><a href="https://zenodo.org/badge/latestdoi/609644044" class="external-link"><img src="https://zenodo.org/badge/609644044.svg" alt="DOI"></a></li>
 <li><a href="https://app.codecov.io/gh/YangLabHKUST/mfair?branch=main" class="external-link"><img src="https://codecov.io/gh/YangLabHKUST/mfair/branch/main/graph/badge.svg" alt="Codecov test coverage"></a></li>
 <li><a href="https://github.com/YangLabHKUST/mfair/actions/workflows/R-CMD-check.yaml" class="external-link"><img src="https://github.com/YangLabHKUST/mfair/actions/workflows/R-CMD-check.yaml/badge.svg" alt="R-CMD-check"></a></li>
 <li><a href="https://hits.seeyoufarm.com" class="external-link"><img src="https://hits.seeyoufarm.com/api/count/incr/badge.svg?url=https%3A%2F%2Fgithub.com%2FYangLabHKUST%2Fmfair&amp;count_bg=%2379C83D&amp;title_bg=%23555555&amp;icon=&amp;icon_color=%23E7E7E7&amp;title=hits&amp;edge_flat=false" alt="Hits"></a></li>
diff --git a/pkgdown.yml b/pkgdown.yml
index 6fd9611..30633c8 100644
--- a/pkgdown.yml
+++ b/pkgdown.yml
@@ -4,7 +4,7 @@ pkgdown_sha: ~
 articles:
   ml100k: ml100k.html
   neocortex: neocortex.html
-last_built: 2023-10-13T02:49Z
+last_built: 2023-10-13T03:01Z
 urls:
   reference: https://yanglabhkust.github.io/mfair/reference
   article: https://yanglabhkust.github.io/mfair/articles