diff --git a/Gemfile.lock b/Gemfile.lock
index e627456c6..241c4bfba 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -40,7 +40,8 @@ GEM
       domain_name (~> 0.5)
     http-form_data (2.0.0)
     http_parser.rb (0.6.0)
-    httparty (0.16.0)
+    httparty (0.21.0)
+      mini_mime (>= 1.0.0)
       multi_xml (>= 0.5.2)
     json (2.1.0)
     kramdown (2.1.0)
@@ -64,6 +65,7 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
+    mini_mime (1.1.2)
     mini_portile2 (2.4.0)
     multi_xml (0.6.0)
     multipart-post (2.0.0)