diff --git a/Gemfile.lock b/Gemfile.lock
index 915abe5..f5cac28 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -27,15 +27,13 @@ GEM
     coderay (1.1.1)
     concurrent-ruby (1.1.8)
     diff-lcs (1.1.3)
-    httparty (0.16.3)
-      mime-types (~> 3.0)
+    httparty (0.21.0)
+      mini_mime (>= 1.0.0)
       multi_xml (>= 0.5.2)
     i18n (1.8.9)
       concurrent-ruby (~> 1.0)
     method_source (0.8.2)
-    mime-types (3.2.2)
-      mime-types-data (~> 3.2015)
-    mime-types-data (3.2018.0812)
+    mini_mime (1.1.2)
     minitest (5.14.4)
     multi_xml (0.6.0)
     mustermann (1.1.1)