diff --git a/Gemfile.lock b/Gemfile.lock
index 1db3332..4c1c25f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -25,11 +25,13 @@ GEM
     docile (1.1.5)
     dotenv (2.2.1)
     hashdiff (0.3.7)
-    httparty (0.16.1)
+    httparty (0.21.0)
+      mini_mime (>= 1.0.0)
       multi_xml (>= 0.5.2)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
     json (2.1.0)
+    mini_mime (1.1.2)
     minitest (5.11.3)
     multi_xml (0.6.0)
     oj (3.5.0)