diff --git a/lib/docs/filters/jest/clean_html.rb b/lib/docs/filters/jest/clean_html.rb
index 9d88383f..394316b6 100644
--- a/lib/docs/filters/jest/clean_html.rb
+++ b/lib/docs/filters/jest/clean_html.rb
@@ -18,7 +18,7 @@ module Docs
         end
 
         css('pre').each do |node|
-          node['data-language'] = node['class'][/language-(\w+)/, 1]
+          node['data-language'] = node['class'][/language-(\w+)/, 1] if node['class']
           node.content = node.content
         end
 
diff --git a/lib/docs/scrapers/jest.rb b/lib/docs/scrapers/jest.rb
index 8112f69e..88712474 100644
--- a/lib/docs/scrapers/jest.rb
+++ b/lib/docs/scrapers/jest.rb
@@ -1,7 +1,7 @@
 module Docs
   class Jest < UrlScraper
     self.type = 'jest'
-    self.release = '21.2.1'
+    self.release = '22.0.4'
     self.base_url = 'https://facebook.github.io/jest/docs/en/'
     self.root_path = 'getting-started.html'
     self.links = {