diff --git a/Gemfile b/Gemfile
index 332d1d599e..3be29bce11 100644
--- a/Gemfile
+++ b/Gemfile
@@ -29,7 +29,7 @@ end
 
 group :docs do
   gem 'typhoeus'
-  gem 'nokogiri', '~> 1.6.0'
+  gem 'nokogiri', '~> 1.6.8'
   gem 'html-pipeline'
   gem 'progress_bar'
   gem 'unix_utils'
diff --git a/Gemfile.lock b/Gemfile.lock
index 47334cb404..1ed1eb482a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -42,11 +42,11 @@ GEM
     i18n (0.6.5)
     method_source (0.8.2)
     mime-types (1.25)
-    mini_portile (0.5.1)
+    mini_portile2 (2.1.0)
     minitest (4.7.5)
     multi_json (1.8.1)
-    nokogiri (1.6.0)
-      mini_portile (~> 0.5.0)
+    nokogiri (1.6.8.1)
+      mini_portile2 (~> 2.1.0)
     options (2.3.0)
       fattr
     progress_bar (1.0.0)
@@ -113,7 +113,7 @@ DEPENDENCIES
   erubis
   html-pipeline
   minitest
-  nokogiri (~> 1.6.0)
+  nokogiri (~> 1.6.8)
   progress_bar
   pry (~> 0.9.12)
   rack