4.2.1

lib/jekyll/scholar/utilities.rb

@@ -329,6 +329,7 @@ module Jekyll
       def render_citation(items)
         renderer.render items.zip(locators).map { |entry, locator|
           cited_keys << entry.key
+          cited_keys.uniq!
 
           item = citation_item_for entry, citation_number(entry.key)
           item.locator = locator

lib/jekyll/scholar/version.rb

 module Jekyll
   class Scholar
-    VERSION = '4.2.0'.freeze
+    VERSION = '4.2.1'.freeze
   end
 end