diff --git a/Gemfile b/Gemfile
index 32bf0af..b1e7c80 100644
--- a/Gemfile
+++ b/Gemfile
@@ -14,7 +14,7 @@ gem 'gravtastic', '~> 2.2.0'
 gem 'haml', '~> 3.0.22'
 gem 'hoptoad_notifier', '~> 2.4'
 gem 'maruku', '~> 0.6.0'
-gem 'nokogiri', '~> 1.4.4'
+gem 'nokogiri', '~> 1.13.9'
 gem 'oauth', '~> 0.4.4'
 gem 'rdoc', '~> 2.4.2'
 gem 'recaptcha', '~> 0.2.3', :require => 'recaptcha/rails'
diff --git a/Gemfile.lock b/Gemfile.lock
index d72efec..fa4b52b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -55,9 +55,12 @@ GEM
       syntax (>= 1.0.0)
     method_source (0.8.2)
     mime-types (1.16)
+    mini_portile2 (2.8.0)
     minitest (1.7.2)
     mysql (2.8.1)
-    nokogiri (1.4.4)
+    nokogiri (1.13.9)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     oauth (0.4.4)
     passenger (3.0.5)
       daemon_controller (>= 0.2.5)
@@ -74,6 +77,7 @@ GEM
       rails (~> 2.3)
       rspec (~> 1.3)
       rspec-rails (~> 1.3)
+    racc (1.6.0)
     rack (1.1.6)
     rack-test (0.6.0)
       rack (>= 1.0)
@@ -147,7 +151,7 @@ DEPENDENCIES
   markup_validity (~> 1.1.0)
   maruku (~> 0.6.0)
   mysql (~> 2.8.1)
-  nokogiri (~> 1.4.4)
+  nokogiri (~> 1.13.9)
   oauth (~> 0.4.4)
   passenger (= 3.0.5)
   pry (~> 0.9.12.6)