diff --git a/website/static/css/docs.css b/website/static/css/docs.css
index 7aeb8e2106a..66a3e448620 100644
--- a/website/static/css/docs.css
+++ b/website/static/css/docs.css
@@ -178,6 +178,7 @@ figcaption {
 /* Right side navigation */
 .onPageNav {
   overflow: visible;
+  overflow-y: auto;
 }
 
 .onPageNav a,