diff --git a/AUTHORS.md b/AUTHORS.md
index 277683a00..b81b6d245 100644
--- a/AUTHORS.md
+++ b/AUTHORS.md
@@ -25,16 +25,16 @@ and provided thanks to the work of the following contributors:
 * [JantsoP](https://github.com/JantsoP)
 * [nullkal](https://github.com/nullkal)
 * [yookoala](https://github.com/yookoala)
+* [mabkenar](https://github.com/mabkenar)
 * [ysksn](https://github.com/ysksn)
 * [shuheiktgw](https://github.com/shuheiktgw)
 * [ashfurrow](https://github.com/ashfurrow)
-* [mabkenar](https://github.com/mabkenar)
-* [zunda](https://github.com/zunda)
 * [Kjwon15](https://github.com/Kjwon15)
+* [zunda](https://github.com/zunda)
 * [eramdam](https://github.com/eramdam)
 * [masarakki](https://github.com/masarakki)
-* [ticky](https://github.com/ticky)
 * [takayamaki](https://github.com/takayamaki)
+* [ticky](https://github.com/ticky)
 * [Quenty31](https://github.com/Quenty31)
 * [danhunsaker](https://github.com/danhunsaker)
 * [ThisIsMissEm](https://github.com/ThisIsMissEm)
@@ -105,6 +105,7 @@ and provided thanks to the work of the following contributors:
 * [ProgVal](https://github.com/ProgVal)
 * [valentin2105](https://github.com/valentin2105)
 * [yuntan](https://github.com/yuntan)
+* [ashleyhull-versent](https://github.com/ashleyhull-versent)
 * [goofy-bz](mailto:goofy@babelzilla.org)
 * [kadiix](https://github.com/kadiix)
 * [kodacs](https://github.com/kodacs)
@@ -127,9 +128,9 @@ and provided thanks to the work of the following contributors:
 * [reneklacan](https://github.com/reneklacan)
 * [ekiru](https://github.com/ekiru)
 * [tcitworld](https://github.com/tcitworld)
-* [ashleyhull-versent](https://github.com/ashleyhull-versent)
 * [geta6](https://github.com/geta6)
 * [happycoloredbanana](https://github.com/happycoloredbanana)
+* [kedamaDQ](https://github.com/kedamaDQ)
 * [leopku](https://github.com/leopku)
 * [SansPseudoFix](https://github.com/SansPseudoFix)
 * [tomfhowe](https://github.com/tomfhowe)
@@ -146,7 +147,7 @@ and provided thanks to the work of the following contributors:
 * [treby](https://github.com/treby)
 * [Reverite](https://github.com/Reverite)
 * [jpdevries](https://github.com/jpdevries)
-* [00x9d](https://github.com/00x9d)
+* [H-C-F](https://github.com/H-C-F)
 * [Kurtis Rainbolt-Greene](mailto:me@kurtisrainboltgreene.name)
 * [saper](https://github.com/saper)
 * [nevillepark](https://github.com/nevillepark)
@@ -195,6 +196,7 @@ and provided thanks to the work of the following contributors:
 * [Fjoerfoks](https://github.com/Fjoerfoks)
 * [fmauNeko](https://github.com/fmauNeko)
 * [gloaec](https://github.com/gloaec)
+* [Gomasy](https://github.com/Gomasy)
 * [unstabler](https://github.com/unstabler)
 * [potato4d](https://github.com/potato4d)
 * [h-izumi](https://github.com/h-izumi)
@@ -221,6 +223,7 @@ and provided thanks to the work of the following contributors:
 * [petzah](https://github.com/petzah)
 * [ignisf](https://github.com/ignisf)
 * [raymestalez](https://github.com/raymestalez)
+* [sascha-sl](https://github.com/sascha-sl)
 * [u1-liquid](https://github.com/u1-liquid)
 * [sim6](https://github.com/sim6)
 * [stemid](https://github.com/stemid)
@@ -248,7 +251,6 @@ and provided thanks to the work of the following contributors:
 * [haoyayoi](https://github.com/haoyayoi)
 * [ik11235](https://github.com/ik11235)
 * [kawax](https://github.com/kawax)
-* [kedamaDQ](https://github.com/kedamaDQ)
 * [007lva](https://github.com/007lva)
 * [matsurai25](https://github.com/matsurai25)
 * [mecab](https://github.com/mecab)
@@ -274,6 +276,7 @@ and provided thanks to the work of the following contributors:
 * [Aditoo17](https://github.com/Aditoo17)
 * [unascribed](https://github.com/unascribed)
 * [Aguay-val](https://github.com/Aguay-val)
+* [Akihiko Odaki](mailto:nekomanma@pixiv.co.jp)
 * [knu](https://github.com/knu)
 * [h3poteto](https://github.com/h3poteto)
 * [unleashed](https://github.com/unleashed)
@@ -296,6 +299,7 @@ and provided thanks to the work of the following contributors:
 * [ayumin](https://github.com/ayumin)
 * [BaptisteGelez](https://github.com/BaptisteGelez)
 * [bzg](https://github.com/bzg)
+* [BenLubar](https://github.com/BenLubar)
 * [benediktg](https://github.com/benediktg)
 * [blakebarnett](https://github.com/blakebarnett)
 * [bradj](https://github.com/bradj)
@@ -341,7 +345,6 @@ and provided thanks to the work of the following contributors:
 * [hattori6789](https://github.com/hattori6789)
 * [algernon](https://github.com/algernon)
 * [Fastbyte01](https://github.com/Fastbyte01)
-* [Gomasy](https://github.com/Gomasy)
 * [myfreeweb](https://github.com/myfreeweb)
 * [gfaivre](https://github.com/gfaivre)
 * [Fiaxhs](https://github.com/Fiaxhs)
@@ -365,7 +368,7 @@ and provided thanks to the work of the following contributors:
 * [Floppy](https://github.com/Floppy)
 * [loomchild](https://github.com/loomchild)
 * [jenkr55](https://github.com/jenkr55)
-* [docjkl](https://github.com/docjkl)
+* [press5](https://github.com/press5)
 * [TrollDecker](https://github.com/TrollDecker)
 * [jmontane](https://github.com/jmontane)
 * [jonathanklee](https://github.com/jonathanklee)
@@ -450,7 +453,6 @@ and provided thanks to the work of the following contributors:
 * [staticsafe](https://github.com/staticsafe)
 * [snwh](https://github.com/snwh)
 * [sts10](https://github.com/sts10)
-* [sascha-sl](https://github.com/sascha-sl)
 * [skoji](https://github.com/skoji)
 * [ScienJus](https://github.com/ScienJus)
 * [larkinscott](https://github.com/larkinscott)
@@ -464,7 +466,7 @@ and provided thanks to the work of the following contributors:
 * [shouko](https://github.com/shouko)
 * [Sina Mashek](mailto:sina@mashek.xyz)
 * [sossii](https://github.com/sossii)
-* [SpankyWorks](https://github.com/SpankyWorks)
+* [Spanky](mailto:2788886+spankyworks@users.noreply.github.com)
 * [StefOfficiel](mailto:pichard.stephane@free.fr)
 * [Svetlozar Todorov](mailto:svetlik@users.noreply.github.com)
 * [Sébastien Santoro](mailto:dereckson@espace-win.org)
diff --git a/Gemfile b/Gemfile
index 39be35946..c818cba37 100644
--- a/Gemfile
+++ b/Gemfile
@@ -73,7 +73,7 @@ gem 'rails-settings-cached', '~> 0.6'
 gem 'redis', '~> 4.0', require: ['redis', 'redis/connection/hiredis']
 gem 'mario-redis-lock', '~> 1.2', require: 'redis_lock'
 gem 'rqrcode', '~> 0.10'
-gem 'sanitize', '~> 4.6'
+gem 'sanitize', '~> 5.0'
 gem 'sidekiq', '~> 5.2'
 gem 'sidekiq-scheduler', '~> 3.0'
 gem 'sidekiq-unique-jobs', '~> 5.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index 759151fcf..cacf3adf4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -362,8 +362,8 @@ GEM
     nio4r (2.3.1)
     nokogiri (1.8.5)
       mini_portile2 (~> 2.3.0)
-    nokogumbo (1.5.0)
-      nokogiri
+    nokogumbo (2.0.0)
+      nokogiri (~> 1.8, >= 1.8.4)
     nsa (0.2.4)
       activesupport (>= 4.2, < 6)
       concurrent-ruby (~> 1.0.0)
@@ -545,10 +545,10 @@ GEM
     rufus-scheduler (3.5.2)
       fugit (~> 1.1, >= 1.1.5)
     safe_yaml (1.0.4)
-    sanitize (4.6.6)
+    sanitize (5.0.0)
       crass (~> 1.0.2)
-      nokogiri (>= 1.4.4)
-      nokogumbo (~> 1.4)
+      nokogiri (>= 1.8.0)
+      nokogumbo (~> 2.0)
     sass (3.6.0)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
@@ -752,7 +752,7 @@ DEPENDENCIES
   rspec-rails (~> 3.8)
   rspec-sidekiq (~> 3.0)
   rubocop (~> 0.60)
-  sanitize (~> 4.6)
+  sanitize (~> 5.0)
   scss_lint (~> 0.57)
   sidekiq (~> 5.2)
   sidekiq-bulk (~> 0.1.1)
diff --git a/spec/lib/formatter_spec.rb b/spec/lib/formatter_spec.rb
index ec4a6493d..0c1efe7c3 100644
--- a/spec/lib/formatter_spec.rb
+++ b/spec/lib/formatter_spec.rb
@@ -514,7 +514,7 @@ RSpec.describe Formatter do
     subject { Formatter.instance.sanitize(html, Sanitize::Config::MASTODON_STRICT) }
 
     it 'sanitizes' do
-      is_expected.to eq 'alert("Hello")'
+      is_expected.to eq ''
     end
   end
 end