diff --git a/Gemfile.lock b/Gemfile.lock
index 5154b6f..3da59b4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -37,6 +37,7 @@ GEM
       multi_json (~> 1.0)
     arel (2.2.1)
     builder (3.0.0)
+    concurrent-ruby (1.1.10)
     database_cleaner (0.7.0)
     diff-lcs (1.1.3)
     erubis (2.7.0)
@@ -52,7 +53,8 @@ GEM
     guard-rspec (0.6.0)
       guard (>= 0.10.0)
     hike (1.2.1)
-    i18n (0.6.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jquery-rails (1.0.19)
       railties (~> 3.0)
       thor (~> 0.14)