diff --git a/lib/sendgrid_toolkit/common.rb b/lib/sendgrid_toolkit/common.rb
index 275f45f..2348654 100644
--- a/lib/sendgrid_toolkit/common.rb
+++ b/lib/sendgrid_toolkit/common.rb
@@ -10,6 +10,9 @@ def retrieve(options = {})
     def retrieve_with_timestamps(options = {})
       options.merge! :date => 1
       response = retrieve options
+      if response.is_a? HTTParty::Response
+        response = response.parsed_response
+      end
       if response.is_a? Array
         response.each do |message|
           parse_message_time message
@@ -40,4 +43,4 @@ def parse_message_time(message)
 
   end
 
-end
\ No newline at end of file
+end