diff --git a/Gemfile.lock b/Gemfile.lock
index 9d272b8..fa83a2e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -30,9 +30,11 @@ GEM
     activesupport (3.0.3)
     arel (2.0.7)
     builder (2.1.2)
+    concurrent-ruby (1.1.5)
     erubis (2.6.6)
       abstract (>= 1.0.0)
-    i18n (0.5.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     mail (2.2.15)
       activesupport (>= 2.3.6)
       i18n (>= 0.4.0)