diff --git a/Gemfile.lock b/Gemfile.lock
index 1f35e15e..4c588499 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -124,7 +124,8 @@ GEM
       railties (>= 3.1)
     http-cookie (1.0.2)
       domain_name (~> 0.5)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     icalendar (2.3.0)
     jeff (1.5.1)
       excon (>= 0.22.1)