diff --git a/Gemfile b/Gemfile
index d9740702f..fc7160c82 100644
--- a/Gemfile
+++ b/Gemfile
@@ -59,7 +59,7 @@ gem 'httplog', '~> 1.3'
 gem 'idn-ruby', require: 'idn'
 gem 'kaminari', '~> 1.1'
 gem 'link_header', '~> 0.0'
-gem 'mime-types', '~> 3.2', require: 'mime/types/columnar'
+gem 'mime-types', '~> 3.3', require: 'mime/types/columnar'
 gem 'nilsimsa', git: 'https://github.com/witgo/nilsimsa', ref: 'fd184883048b922b176939f851338d0a4971a532'
 gem 'nokogiri', '~> 1.10'
 gem 'nsa', '~> 0.2'
diff --git a/Gemfile.lock b/Gemfile.lock
index de4323326..c0394f247 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -364,9 +364,9 @@ GEM
     microformats (4.1.0)
       json (~> 2.1)
       nokogiri (~> 1.8, >= 1.8.3)
-    mime-types (3.2.2)
+    mime-types (3.3)
       mime-types-data (~> 3.2015)
-    mime-types-data (3.2018.0812)
+    mime-types-data (3.2019.0904)
     mimemagic (0.3.3)
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
@@ -729,7 +729,7 @@ DEPENDENCIES
   mario-redis-lock (~> 1.2)
   memory_profiler
   microformats (~> 4.1)
-  mime-types (~> 3.2)
+  mime-types (~> 3.3)
   net-ldap (~> 0.10)
   nilsimsa!
   nokogiri (~> 1.10)