diff --git a/Gemfile b/Gemfile
index 326174c75f2..8b8395f0ecf 100644
--- a/Gemfile
+++ b/Gemfile
@@ -152,7 +152,7 @@ gem 'asciidoctor-plantuml', '0.0.10'
 gem 'rouge', '~> 3.17.0'
 gem 'truncato', '~> 0.7.11'
 gem 'bootstrap_form', '~> 4.2.0'
-gem 'nokogiri', '~> 1.10.5'
+gem 'nokogiri', '~> 1.13.4'
 gem 'escape_utils', '~> 1.1'
 
 # Calendar rendering
diff --git a/Gemfile.lock b/Gemfile.lock
index 220735f0e27..8f31e0f061e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -630,10 +630,12 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2019.0331)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_magick (4.9.5)
     mini_mime (1.0.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.8.0)
     minitest (5.11.3)
     msgpack (1.3.1)
     multi_json (1.14.1)
@@ -652,8 +654,9 @@ GEM
     netrc (0.11.0)
     nio4r (2.5.2)
     no_proxy_fix (0.1.2)
-    nokogiri (1.10.8)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.13.4)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     nokogumbo (1.5.0)
       nokogiri
     notiffany (0.1.3)
@@ -783,6 +786,7 @@ GEM
     public_suffix (4.0.3)
     pyu-ruby-sasl (0.0.3.3)
     raabro (1.1.6)
+    racc (1.6.0)
     rack (2.0.9)
     rack-accept (0.4.5)
       rack (>= 0.4)
@@ -1294,7 +1298,7 @@ DEPENDENCIES
   net-ldap
   net-ntp
   net-ssh (~> 5.2)
-  nokogiri (~> 1.10.5)
+  nokogiri (~> 1.13.4)
   oauth2 (~> 1.4)
   octokit (~> 4.15)
   omniauth (~> 1.8)