diff --git a/Gemfile.lock b/Gemfile.lock
index 4c2ccfa2c..adb5708fd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -44,6 +44,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.6.3)
+    concurrent-ruby (1.1.5)
     coveralls (0.6.9)
       multi_json (~> 1.3)
       rest-client
@@ -59,25 +60,25 @@ GEM
     factory_girl (4.2.0)
       activesupport (>= 3.0.0)
     hike (1.2.3)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     journey (1.0.4)
     jquery-rails (3.0.4)
       railties (>= 3.0, < 5.0)
       thor (>= 0.14, < 2.0)
     json (1.8.3)
-    mail (2.4.4)
-      i18n (>= 0.4.0)
+    mail (2.5.5)
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
     mime-types (1.25.1)
-    mini_portile (0.5.1)
-    multi_json (1.11.0)
-    nokogiri (1.6.0)
-      mini_portile (~> 0.5.0)
+    mini_portile2 (2.4.0)
+    multi_json (1.14.1)
+    nokogiri (1.9.1)
+      mini_portile2 (~> 2.4.0)
     pg (0.15.1)
     polyglot (0.3.5)
-    rack (1.4.5)
-    rack-cache (1.2)
+    rack (1.4.7)
+    rack-cache (1.9.0)
       rack (>= 0.4)
     rack-ssl (1.3.4)
       rack