diff --git a/Gemfile b/Gemfile
index f89d31a90..46d46926a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -73,7 +73,7 @@ gem 'active_model_serializers', '~> 0.9.3'
 gem 'json-stream', '~> 0.2.1'
 
 # XML Parser
-gem 'nokogiri', '~> 1.6.7'
+gem 'nokogiri', '~> 1.6.8'
 
 # Authentication
 # devise => 4.0.0 does not support Rails 3.2 and Rails 4.0
diff --git a/Gemfile.lock b/Gemfile.lock
index af05d5143..db6b6dd6d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -343,7 +343,7 @@ GEM
     metaclass (0.0.4)
     method_source (0.8.2)
     mime-types (1.25.1)
-    mini_portile2 (2.0.0)
+    mini_portile2 (2.1.0)
     mocha (1.1.0)
       metaclass (~> 0.0.1)
     momentjs-rails (2.11.1)
@@ -356,11 +356,13 @@ GEM
     net-ssh (3.1.1)
     netrc (0.11.0)
     nio4r (1.2.1)
-    nokogiri (1.6.7.2)
-      mini_portile2 (~> 2.0.0.rc2)
+    nokogiri (1.6.8)
+      mini_portile2 (~> 2.1.0)
+      pkg-config (~> 1.1.7)
     options (2.3.2)
     orm_adapter (0.5.0)
     pg (0.18.4)
+    pkg-config (1.1.7)
     poltergeist (1.9.0)
       capybara (~> 2.1)
       cliver (~> 0.3.1)
@@ -633,7 +635,7 @@ DEPENDENCIES
   launchy (~> 2.4.3)
   mocha (~> 1.1.0)
   momentjs-rails (~> 2.11.0)
-  nokogiri (~> 1.6.7)
+  nokogiri (~> 1.6.8)
   ontology-united!
   pg (~> 0.18.1)
   poltergeist (~> 1.9.0)