diff --git a/lib/pastebinner.rb b/lib/pastebinner.rb
index 5c39276..3bbbecb 100755
--- a/lib/pastebinner.rb
+++ b/lib/pastebinner.rb
@@ -114,6 +114,11 @@ class Pastebinner
     pp.map { |p| p['key'] }
   end
 
+  # scraped keys difference returned
+  def get_key_diffs(keys1, keys2)
+    keys1 - keys2 | keys2 - keys1
+  end
+
   def raw_paste_data(unique_paste_key)
     response = RestClient::Request.execute(
       method: :get,