diff --git a/docs/index.html b/docs/index.html
index ba6a998..6ff8715 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -43,6 +43,13 @@
   <script src="//cdn.jsdelivr.net/npm/prismjs@1/components/prism-bash.min.js"></script>
   <script src="//cdn.jsdelivr.net/npm/prismjs@1/components/prism-python.min.js"></script>
 
+  <script src="https://utteranc.es/client.js"
+        repo="[datawhalechina/easy-rl]"
+        issue-term="title"
+        theme="github-light"
+        crossorigin="anonymous"
+        async>
+  </script>
 
 
   <!-- <script src="//unpkg.com/docsify@4.7.0/lib/docsify.min.js"></script> -->