diff --git a/Gemfile.lock b/Gemfile.lock
index 268829a..28bb43e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -50,7 +50,8 @@ GEM
     erubis (2.7.0)
     globalid (0.4.0)
       activesupport (>= 4.2.0)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     json (1.8.2)
     loofah (2.0.2)
       nokogiri (>= 1.5.9)