diff --git a/Gemfile.lock b/Gemfile.lock
index f2927d5..0deb85f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -25,7 +25,8 @@ GEM
     daemons (1.2.4)
     eventmachine (1.2.1)
     highline (1.7.8)
-    i18n (0.7.0)
+    i18n (1.10.0)
+      concurrent-ruby (~> 1.0)
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)