diff --git a/Gemfile.lock b/Gemfile.lock
index 132ec12..97bc416 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -118,7 +118,8 @@ GEM
     globalid (0.4.2)
       activesupport (>= 4.2.0)
     hashie (4.1.0)
-    httparty (0.16.2)
+    httparty (0.21.0)
+      mini_mime (>= 1.0.0)
       multi_xml (>= 0.5.2)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)