diff --git a/Gemfile b/Gemfile
index 6180a1d11..8bab6e2e7 100644
--- a/Gemfile
+++ b/Gemfile
@@ -64,7 +64,7 @@ gem 'kaminari', '~> 1.2'
 gem 'link_header', '~> 0.0'
 gem 'mime-types', '~> 3.3.1', require: 'mime/types/columnar'
 gem 'nilsimsa', git: 'https://github.com/witgo/nilsimsa', ref: 'fd184883048b922b176939f851338d0a4971a532'
-gem 'nokogiri', '~> 1.10'
+gem 'nokogiri', '~> 1.11'
 gem 'nsa', '~> 0.2'
 gem 'oj', '~> 3.10'
 gem 'ox', '~> 2.14'
diff --git a/Gemfile.lock b/Gemfile.lock
index 46207d01c..25c035ae1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -349,7 +349,7 @@ GEM
     mime-types-data (3.2020.0512)
     mimemagic (0.3.5)
     mini_mime (1.0.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.0)
     minitest (5.14.2)
     msgpack (1.3.3)
     multi_json (1.15.0)
@@ -359,8 +359,9 @@ GEM
       net-ssh (>= 2.6.5, < 7.0.0)
     net-ssh (6.1.0)
     nio4r (2.5.4)
-    nokogiri (1.10.10)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.0)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     nokogumbo (2.0.2)
       nokogiri (~> 1.8, >= 1.8.4)
     nsa (0.2.7)
@@ -433,6 +434,7 @@ GEM
     pundit (2.1.0)
       activesupport (>= 3.0.0)
     raabro (1.3.3)
+    racc (1.5.2)
     rack (2.2.3)
     rack-attack (6.3.1)
       rack (>= 1.0, < 3)
@@ -745,7 +747,7 @@ DEPENDENCIES
   mime-types (~> 3.3.1)
   net-ldap (~> 0.17)
   nilsimsa!
-  nokogiri (~> 1.10)
+  nokogiri (~> 1.11)
   nsa (~> 0.2)
   oj (~> 3.10)
   omniauth (~> 1.9)