diff --git a/lib/archive_extensions/similar_users.rb b/lib/archive_extensions/similar_users.rb
index 9bc1870..87bcbea 100644
--- a/lib/archive_extensions/similar_users.rb
+++ b/lib/archive_extensions/similar_users.rb
@@ -1,10 +1,24 @@
 module ArchiveExtensions
   class SimilarUsers
-    def self.calculate(login: , language_threshold: 20.0, year: Time.now.year)
+    def self.calculate(login: , language_threshold: 20.0, year: Time.now.year, level: 1)
       # 1st find users that he is connected to (by the repos he contributes to)
       # 2nd calculate the language difference to those users
       # If the calculated difference is above a certain threshold
       # then add them to the results
+      if level > 1
+        similar = calculate_base(login: login, language_threshold: language_threshold, year: year)
+        similar_level = similar.map do |similar_user|
+          next if similar_user.login == login
+          SimilarUsers.calculate(login: similar_user.login, language_threshold: language_threshold, year: year, level: level - 1)
+        end.compact
+
+        similar | similar_level
+      else
+        calculate_base(login: login, language_threshold: language_threshold, year: year)
+      end.flatten
+    end
+
+    def self.calculate_base(login: , language_threshold: 20.0, year: Time.now.year)
       ArchiveExtensions::TopContributedRepositories.for(login: login, count: 5).map do |contributed_repo|
         repo = contributed_repo.fetch("repo")
         repo.all_contributors.select do |contributor|