diff --git a/Gemfile.lock b/Gemfile.lock
index f124db0..7381cac 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -47,6 +47,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.6.3)
+    concurrent-ruby (1.1.9)
     cucumber (1.3.10)
       builder (>= 2.1.2)
       diff-lcs (>= 1.1.3)
@@ -81,7 +82,8 @@ GEM
     gherkin (2.12.2)
       multi_json (~> 1.3)
     hike (1.2.3)
-    i18n (0.6.9)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jbuilder (1.5.3)
       activesupport (>= 3.0.0)
       multi_json (>= 1.2.0)