diff --git a/lib/algolia_html_extractor.rb b/lib/algolia_html_extractor.rb
index 8649f9e..d92996e 100644
--- a/lib/algolia_html_extractor.rb
+++ b/lib/algolia_html_extractor.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'nokogiri'
 require 'digest/md5'
 
@@ -153,6 +155,7 @@ def self.uuid(item)
   def self.heading_weight(heading_level)
     weight = 100
     return weight if heading_level.nil?
+
     weight - ((heading_level + 1) * 10)
   end
 end
diff --git a/lib/version.rb b/lib/version.rb
index 7f2913b..e2d0e5d 100644
--- a/lib/version.rb
+++ b/lib/version.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Expose gem version
 # rubocop:disable Style/SingleLineMethods
 class AlgoliaHTMLExtractorVersion