diff --git a/Gemfile.lock b/Gemfile.lock
index 80ddba4..92e06e5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -21,8 +21,10 @@ GEM
       multi_json (~> 1.0)
     arel (2.2.1)
     builder (3.0.0)
+    concurrent-ruby (1.1.5)
     diff-lcs (1.1.3)
-    i18n (0.6.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     multi_json (1.0.4)
     rspec (2.8.0)
       rspec-core (~> 2.8.0)