diff --git a/Gemfile.lock b/Gemfile.lock
index 52249fb..4d617f4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -14,9 +14,11 @@ GEM
       multi_json (~> 1.0)
     arel (3.0.2)
     builder (3.0.0)
+    concurrent-ruby (1.1.5)
     diff-lcs (1.1.3)
     git (1.2.5)
-    i18n (0.6.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jeweler (1.8.3)
       bundler (~> 1.0)
       git (>= 1.2.5)