diff --git a/Gemfile.lock b/Gemfile.lock
index e23f125..0285f1b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -77,7 +77,8 @@ GEM
     ffi (1.11.1)
     globalid (0.4.1)
       activesupport (>= 4.2.0)
-    httparty (0.15.6)
+    httparty (0.21.0)
+      mini_mime (>= 1.0.0)
       multi_xml (>= 0.5.2)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)