diff --git a/Gemfile.lock b/Gemfile.lock
index c0f693c..a6e5750 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,12 +2,10 @@ GEM
   remote: https://rubygems.org/
   specs:
     digest-sha3 (1.1.0)
-    httparty (0.17.0)
-      mime-types (~> 3.0)
+    httparty (0.21.0)
+      mini_mime (>= 1.0.0)
       multi_xml (>= 0.5.2)
-    mime-types (3.2.2)
-      mime-types-data (~> 3.2015)
-    mime-types-data (3.2019.0331)
+    mini_mime (1.1.2)
     multi_xml (0.6.0)
     mustermann (1.0.3)
     nio4r (2.4.0)