diff --git a/Gemfile.lock b/Gemfile.lock
index ea68191..3a3f664 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -14,7 +14,9 @@ GEM
       multi_json (~> 1.0)
     arel (3.0.2)
     builder (3.0.4)
-    i18n (0.6.1)
+    concurrent-ruby (1.1.10)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     mocha (0.9.12)
     multi_json (1.5.0)
     rake (10.0.3)