diff --git a/Gemfile.lock b/Gemfile.lock
index 36b6aeb..3704f35 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -119,6 +119,7 @@ GEM
     mime-types (1.21)
     mini_magick (3.5.0)
       subexec (~> 0.2.1)
+    mini_portile2 (2.8.0)
     mongoid (3.0.0)
       activemodel (~> 3.1)
       moped (~> 1.1.1)
@@ -131,8 +132,11 @@ GEM
     multi_json (1.6.1)
     multipart-post (1.2.0)
     nifty-generators (0.4.6)
-    nokogiri (1.5.6)
-    nokogiri (1.5.6-x86-mingw32)
+    nokogiri (1.13.9)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
+    nokogiri (1.13.9-x86-mingw32)
+      racc (~> 1.4)
     oauth2 (0.8.1)
       faraday (~> 0.8)
       httpauth (~> 0.1)
@@ -160,6 +164,7 @@ GEM
     premailer-rails3 (1.3.1)
       premailer (~> 1.7)
       rails (~> 3)
+    racc (1.6.0)
     rack (1.4.5)
     rack-cache (1.2)
       rack (>= 0.4)