diff --git a/Gemfile b/Gemfile
index aed479ea..ae19dcb2 100644
--- a/Gemfile
+++ b/Gemfile
@@ -25,7 +25,7 @@ gem 'paperclip'
 gem 'puma', '~> 5.4'
 gem 'rails_autolink'
 gem 'RedCloth'
-gem 'sanitize', '~> 5.2'
+gem 'sanitize', '~> 6.0'
 gem 'will_paginate'
 
 # See https://github.com/sstephenson/execjs#readme for more supported runtimes
diff --git a/Gemfile.lock b/Gemfile.lock
index 9ff562b3..b82f1e50 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -170,8 +170,6 @@ GEM
     nokogiri (1.12.2)
       mini_portile2 (~> 2.6.1)
       racc (~> 1.4)
-    nokogumbo (2.0.4)
-      nokogiri (~> 1.8, >= 1.8.4)
     paperclip (6.1.0)
       activemodel (>= 4.2.0)
       activesupport (>= 4.2.0)
@@ -252,10 +250,9 @@ GEM
       parser (>= 3.0.1.1)
     ruby-progressbar (1.11.0)
     safe_yaml (1.0.5)
-    sanitize (5.2.3)
+    sanitize (6.0.0)
       crass (~> 1.0.2)
-      nokogiri (>= 1.8.0)
-      nokogumbo (~> 2.0)
+      nokogiri (>= 1.12.0)
     sassc (2.4.0)
       ffi (~> 1.9)
     sassc-rails (2.1.2)
@@ -358,7 +355,7 @@ DEPENDENCIES
   rails_autolink
   rspec-expectations
   rubocop (~> 1.18)
-  sanitize (~> 5.2)
+  sanitize (~> 6.0)
   sassc-rails (~> 2.1.2)
   simplecov
   solargraph