diff --git a/lib/static/robots.txt b/lib/static/robots.txt
index 9a42a35c..e9ae5fde 100644
--- a/lib/static/robots.txt
+++ b/lib/static/robots.txt
@@ -6,3 +6,6 @@ Disallow: /comment/
 # to the same images that the index shows
 Disallow: /post/next/
 Disallow: /post/prev/
+# Site is rate limited to 1 request / sec,
+# returns 503 for more than that
+Crawl-delay: 3