diff --git a/Gemfile.lock b/Gemfile.lock
index f7158bd..c5d7317 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -27,8 +27,8 @@ GEM
       czmq-ffi-gen (~> 0.15.0)
     data_uri (0.1.0)
     ffi (1.9.25)
-    httparty (0.16.4)
-      mime-types (~> 3.0)
+    httparty (0.21.0)
+      mini_mime (>= 1.0.0)
       multi_xml (>= 0.5.2)
     i18n (1.6.0)
       concurrent-ruby (~> 1.0)
@@ -37,10 +37,8 @@ GEM
       data_uri (~> 0.1)
       mimemagic (~> 0.3)
       multi_json (~> 1.11)
-    mime-types (3.2.2)
-      mime-types-data (~> 3.2015)
-    mime-types-data (3.2019.0331)
     mimemagic (0.3.3)
+    mini_mime (1.1.2)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
     multi_json (1.13.1)