diff --git a/README.md b/README.md
index 91ea24f..d6e7ff7 100644
--- a/README.md
+++ b/README.md
@@ -61,6 +61,7 @@ end
 - [IAS](https://integralads.com/ias-privacy-data-management/policies/site-indexing-policy/)
 - [OpenAI GPTBot](https://platform.openai.com/docs/gptbot)
 - [Oracle Data Cloud Crawler](https://www.oracle.com/corporate/acquisitions/grapeshot/crawler.html)
+- [Marginalia](https://www.marginalia.nu/marginalia-search/for-webmasters/)
 - [Petal search engine](http://aspiegel.com/petalbot)
 - [Pinterest](https://help.pinterest.com/en/articles/about-pinterest-crawler-0)
 - [Twitterbot](https://developer.twitter.com/en/docs/tweets/optimize-with-cards/guides/getting-started),
diff --git a/lib/legitbot.rb b/lib/legitbot.rb
index 3eb9e29..1b9687a 100644
--- a/lib/legitbot.rb
+++ b/lib/legitbot.rb
@@ -15,6 +15,7 @@
 require_relative 'legitbot/gptbot'
 require_relative 'legitbot/ias'
 require_relative 'legitbot/oracle'
+require_relative 'legitbot/marginalia'
 require_relative 'legitbot/petalbot'
 require_relative 'legitbot/pinterest'
 require_relative 'legitbot/twitter'
diff --git a/lib/legitbot/marginalia.rb b/lib/legitbot/marginalia.rb
new file mode 100644
index 0000000..3b3ea81
--- /dev/null
+++ b/lib/legitbot/marginalia.rb
@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+module Legitbot # :nodoc:
+  # https://www.marginalia.nu/marginalia-search/for-webmasters/
+  class Marginalia < BotMatch
+    ip_ranges %w[
+      81.170.128.21/32
+    ]
+  end
+
+  rule Legitbot::Marginalia, %w[search.marginalia.nu]
+end