diff --git a/Gemfile b/Gemfile
index 952d42dfa..ce1491990 100644
--- a/Gemfile
+++ b/Gemfile
@@ -24,7 +24,7 @@ gem 'validates_email_format_of', '1.6.3' # validates email against RFC 2822 and
 
 # 0.7.3 is the latest for Rails 4.2, however, it is absent on Rubygems server
 # https://github.com/huacnlee/rails-settings-cached/issues/165
-gem 'nokogiri', '~> 1.11.5'
+gem 'nokogiri', '~> 1.11.6'
 
 # style
 gem 'bootstrap-sass', '~> 3.4'
diff --git a/Gemfile.lock b/Gemfile.lock
index f63f0c00e..0947e0a56 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -314,10 +314,10 @@ GEM
     net-protocol (0.1.0)
     netrc (0.11.0)
     nio4r (2.5.7)
-    nokogiri (1.11.5)
+    nokogiri (1.11.6)
       mini_portile2 (~> 2.5.0)
       racc (~> 1.4)
-    nokogiri (1.11.5-x86_64-linux)
+    nokogiri (1.11.6-x86_64-linux)
       racc (~> 1.4)
     nori (2.6.0)
     omniauth (1.9.1)
@@ -553,7 +553,7 @@ DEPENDENCIES
   mimemagic (= 0.4.3)
   minitest (~> 5.14)
   money-rails
-  nokogiri (~> 1.11.5)
+  nokogiri (~> 1.11.6)
   omniauth
   omniauth-rails_csrf_protection
   omniauth-tara!