diff --git a/Gemfile.lock b/Gemfile.lock
index f9a2063..78054e2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -31,10 +31,12 @@ GEM
       multi_json (~> 1.0)
     arel (2.2.1)
     builder (3.0.0)
+    concurrent-ruby (1.1.10)
     crack (0.1.8)
     erubis (2.7.0)
     hike (1.2.1)
-    i18n (0.6.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jquery-rails (1.0.17)
       railties (~> 3.0)
       thor (~> 0.14)