diff --git a/Gemfile.lock b/Gemfile.lock
index de69215..82ac329 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -37,12 +37,14 @@ GEM
       multi_json (~> 1.0)
     arel (2.2.1)
     builder (3.0.0)
+    concurrent-ruby (1.1.10)
     diff-lcs (1.1.3)
     erubis (2.7.0)
     fixjour (0.5.3)
       activerecord
     hike (1.2.1)
-    i18n (0.6.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jquery-rails (1.0.16)
       railties (~> 3.0)
       thor (~> 0.14)