diff --git a/Gemfile.lock b/Gemfile.lock
index cdfd2a3..37e7cc8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -28,11 +28,13 @@ GEM
       rake
     arel (4.0.2)
     builder (3.1.4)
+    concurrent-ruby (1.1.10)
     diff-lcs (1.2.4)
     factory_girl (1.3.3)
     faker (0.9.5)
       i18n (~> 0.4)
-    i18n (0.6.5)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     minitest (4.7.5)
     multi_json (1.13.1)
     rake (10.1.0)