diff --git a/Gemfile.lock b/Gemfile.lock
index 73bd52d..4b24ff0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -26,6 +26,7 @@ GEM
       multi_json (~> 1.0)
     arel (3.0.0)
     builder (3.0.0)
+    concurrent-ruby (1.1.5)
     cucumber (1.1.4)
       builder (>= 2.1.2)
       diff-lcs (>= 1.1.2)
@@ -35,7 +36,8 @@ GEM
     diff-lcs (1.1.3)
     gherkin (2.7.6)
       json (>= 1.4.6)
-    i18n (0.6.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     json (1.6.5)
     metaclass (0.0.1)
     minitest (2.11.0)