diff --git a/lib/twitter/rest/tweets.rb b/lib/twitter/rest/tweets.rb
index c0ab2c5d1..61253aa36 100644
--- a/lib/twitter/rest/tweets.rb
+++ b/lib/twitter/rest/tweets.rb
@@ -217,6 +217,7 @@ def update_with_media(status, media, options = {})
         hash = options.dup
         hash[:in_reply_to_status_id] = hash.delete(:in_reply_to_status).id unless hash[:in_reply_to_status].nil?
         hash[:place_id] = hash.delete(:place).woeid unless hash[:place].nil?
+        hash[:headers] = {'Content-Type' => 'multipart/form-data', 'Host' => 'upload.twitter.com'}
         perform_with_object(:post, '/1.1/statuses/update_with_media.json', hash.merge('media[]' => media, 'status' => status), Twitter::Tweet)
       end