diff --git a/Gemfile b/Gemfile
index 1fc72e6..feb82c1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -18,7 +18,7 @@ gem 'sass-rails', '~> 5.0'
 
 # dependency of many other gems
 # need to pin to 1.10, due to old libc on CentOS 6
-gem 'nokogiri', '~> 1.10.0'
+gem 'nokogiri', '~> 1.11.0'
 
 # Use Uglifier as compressor for JavaScript assets
 gem 'uglifier'
diff --git a/Gemfile.lock b/Gemfile.lock
index 5765799..029faea 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -242,7 +242,7 @@ GEM
     mime-types-data (3.2019.0331)
     mimemagic (0.3.5)
     mini_mime (1.0.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.0)
     minitest (5.14.4)
     multipart-post (2.1.1)
     mysql2 (0.5.2)
@@ -252,8 +252,9 @@ GEM
       net-ssh (>= 2.6.5, < 7.0.0)
     net-ssh (6.0.2)
     nio4r (2.5.7)
-    nokogiri (1.10.10)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.0)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     nokogumbo (2.0.2)
       nokogiri (~> 1.8, >= 1.8.4)
     omniauth (1.9.1)
@@ -265,6 +266,7 @@ GEM
       omniauth (~> 1.2)
     orm_adapter (0.5.0)
     public_suffix (3.1.1)
+    racc (1.5.2)
     rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -393,7 +395,7 @@ DEPENDENCIES
   mysql2 (= 0.5.2)
   net-ldap
   net-ssh
-  nokogiri (~> 1.10.0)
+  nokogiri (~> 1.11.0)
   rails (~> 5.0)
   rsolr
   rspec