diff --git a/roles/httpd/website/templates/robots/lists.fedoraproject.org-robots.txt b/roles/httpd/website/templates/robots/lists.fedoraproject.org-robots.txt
index a51422965a..87fec7f04a 100644
--- a/roles/httpd/website/templates/robots/lists.fedoraproject.org-robots.txt
+++ b/roles/httpd/website/templates/robots/lists.fedoraproject.org-robots.txt
@@ -9,3 +9,6 @@ Disallow: /
 
 User-agent: ClaudeBot
 Disallow: /
+
+User-agent: Barkrowler
+Disallow: /
diff --git a/roles/mailman3/templates/mailmanweb.conf.j2 b/roles/mailman3/templates/mailmanweb.conf.j2
index a6a73678ce..749dc9a444 100644
--- a/roles/mailman3/templates/mailmanweb.conf.j2
+++ b/roles/mailman3/templates/mailmanweb.conf.j2
@@ -33,9 +33,11 @@ ProxyPassReverse / http://127.0.0.1:8000/
 # Redirecting to hyperkitty if nothing is specified
 RewriteEngine on
 RewriteRule  ^/$    /archives [R,L]
+
 # Spiders-gone-wild
-# These spiders do not follow robots.txt
-RewriteCond %{HTTP_USER_AGENT} ^.*(Bytespider|ClaudeBot).*$ [NC]
+# These spiders may not follow robots.txt and will
+# hit admin sections which consume large amounts of CPU
+RewriteCond %{HTTP_USER_AGENT} ^.*(Bytespider|ClaudeBot|Amazonbot|YandexBot|claudebot|ChatGLM-Spider|GPTBot|Barkrowler|YisouSpider|MJ12bot).*$ [NC]
 RewriteRule .* - [F,L]
 
 # Old static archives