diff --git a/docs/static_site/src/.htaccess b/docs/static_site/src/.htaccess
index d8467ab2142e..679b613b7581 100644
--- a/docs/static_site/src/.htaccess
+++ b/docs/static_site/src/.htaccess
@@ -26,6 +26,7 @@ RewriteOptions AllowNoSlash
 RewriteCond %{REQUEST_URI} !^/versions/
 RewriteCond %{HTTP_REFERER} !mxnet.apache.org
 RewriteCond %{HTTP_REFERER} !mxnet.incubator.apache.org
+RewriteCond %{HTTP_REFERER} !mxnet.cdn.apache.org
 RewriteRule ^(.*)$ /versions/1.6/$1 [r=307,L]
 
 # Redirect Chinese visitors to Chinese CDN, temporary solution for slow site speed in China