diff --git a/data/templates/nginx/plain/yunohost_admin.conf b/data/templates/nginx/plain/yunohost_admin.conf
index 917ad0d5e..24ea25072 100644
--- a/data/templates/nginx/plain/yunohost_admin.conf
+++ b/data/templates/nginx/plain/yunohost_admin.conf
@@ -65,6 +65,10 @@ server {
 
     location /yunohost {
         # Block crawlers bot
+        if ($http_user_agent ~ (crawl|Googlebot|Slurp|spider|bingbot|tracker|click|parser|spider|facebookexternalhit) ) {
+            return 403;
+        }
+        # X-Robots-Tag to precise the rules applied.
         add_header  X-Robots-Tag "nofollow, noindex, noarchive, nosnippet";
         # Redirect most of 404 to maindomain.tld/yunohost/sso
         access_by_lua_file /usr/share/ssowat/access.lua;