diff --git a/Gemfile b/Gemfile
index cecacca..9994ac1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -26,7 +26,7 @@ gem 'rack-cors', ">= 1.0.4", :require => 'rack/cors'
 gem 'bcrypt', '~> 3.1.7'
 gem 'merkle-hash-tree'
 gem 'nokogiri'
-gem 'rails-html-sanitizer', '~> 1.0.4'
+gem 'rails-html-sanitizer', '~> 1.4.3'
 gem 'rswag'
 gem 'railties'
 gem 'actionview'
diff --git a/Gemfile.lock b/Gemfile.lock
index 2916006..94fdee4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -183,8 +183,8 @@ GEM
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.0.4)
-      loofah (~> 2.2, >= 2.2.2)
+    rails-html-sanitizer (1.4.3)
+      loofah (~> 2.3)
     railties (5.2.8)
       actionpack (= 5.2.8)
       activesupport (= 5.2.8)
@@ -322,7 +322,7 @@ DEPENDENCIES
   puma (~> 3.11)
   rack-cors (>= 1.0.4)
   rails (~> 5.2.3)
-  rails-html-sanitizer (~> 1.0.4)
+  rails-html-sanitizer (~> 1.4.3)
   railties
   rbnacl
   rqrcode