diff --git a/Gemfile.lock b/Gemfile.lock
index 3f38d6c..91094e4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -83,7 +83,8 @@ GEM
     hashr (2.0.0)
     http-cookie (1.0.2)
       domain_name (~> 0.5)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     i18n_data (0.7.0)
     jquery-rails (4.1.0)
       rails-dom-testing (~> 1.0)