diff --git a/Gemfile.lock b/Gemfile.lock
index dfbe98a..b95d811 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -14,15 +14,12 @@ GEM
     ast (2.4.0)
     backports (3.15.0)
     concurrent-ruby (1.1.5)
-    httparty (0.17.0)
-      mime-types (~> 3.0)
+    httparty (0.21.0)
+      mini_mime (>= 1.0.0)
       multi_xml (>= 0.5.2)
     jaro_winkler (1.5.3)
     mail (2.7.1)
       mini_mime (>= 0.1.1)
-    mime-types (3.3)
-      mime-types-data (~> 3.2015)
-    mime-types-data (3.2019.0904)
     mini_mime (1.0.2)
     multi_json (1.13.1)
     multi_xml (0.6.0)