diff --git a/Gemfile.lock b/Gemfile.lock
index 0ed2a8e..e033869 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -63,7 +63,8 @@ GEM
       activesupport (>= 4.1.0)
     hashie (3.4.6)
     highline (1.7.8)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jeweler (2.2.1)
       builder
       bundler (>= 1.0)