diff --git a/lib/crawler_detection.rb b/lib/crawler_detection.rb
index e41aa6aeea6..075375ebc90 100644
--- a/lib/crawler_detection.rb
+++ b/lib/crawler_detection.rb
@@ -4,6 +4,6 @@ module CrawlerDetection
   # added 'Swiftbot' based on https://meta.discourse.org/t/how-to-add-html-markup-or-meta-tags-for-external-search-engine/28220
 
   def self.crawler?(user_agent)
-    !/Googlebot|Mediapartners|AdsBot|curl|Twitterbot|facebookexternalhit|bingbot|Baiduspider|ia_archiver|Wayback Save Page|360Spider|Swiftbot/.match(user_agent).nil?
+    !/Googlebot|Mediapartners|AdsBot|curl|Twitterbot|facebookexternalhit|bingbot|Baiduspider|ia_archiver|Wayback Save Page|360Spider|Swiftbot|YandexBot/.match(user_agent).nil?
   end
 end
diff --git a/spec/components/crawler_detection_spec.rb b/spec/components/crawler_detection_spec.rb
index 601fde6c338..e3956b1070c 100644
--- a/spec/components/crawler_detection_spec.rb
+++ b/spec/components/crawler_detection_spec.rb
@@ -19,6 +19,7 @@ describe CrawlerDetection do
       expect(described_class.crawler?("facebookexternalhit/1.1 (+http(s)://www.facebook.com/externalhit_uatext.php)")).to eq(true)
       expect(described_class.crawler?("Mozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)")).to eq(true)
       expect(described_class.crawler?("Baiduspider+(+http://www.baidu.com/search/spider.htm)")).to eq(true)
+      expect(described_class.crawler?("Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots)")).to eq(true)
     end
 
     it "returns false for non-crawler user agents" do