diff --git a/Gemfile.lock b/Gemfile.lock
index 546882c..beabb5c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -98,6 +98,7 @@ GEM
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
     mime-types (1.22)
+    mini_portile2 (2.8.0)
     mongoid (3.1.2)
       activemodel (~> 3.2)
       moped (~> 1.4.2)
@@ -109,7 +110,9 @@ GEM
       rspec (>= 2.9)
     moped (1.4.5)
     multi_json (1.7.2)
-    nokogiri (1.5.9)
+    nokogiri (1.13.6)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     oauth (0.4.7)
     omniauth (1.1.3)
       hashie (~> 1.2)
@@ -124,6 +127,7 @@ GEM
     polyglot (0.3.3)
     quiet_assets (1.0.2)
       railties (>= 3.1, < 5.0)
+    racc (1.6.0)
     rack (1.4.5)
     rack-cache (1.2)
       rack (>= 0.4)