diff --git a/Gemfile.lock b/Gemfile.lock
index e8c6bac..9962184 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -51,6 +51,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.3.3)
+    concurrent-ruby (1.1.5)
     cucumber (1.2.1)
       builder (>= 2.1.2)
       diff-lcs (>= 1.1.3)
@@ -81,7 +82,8 @@ GEM
     guard-rspec (0.5.5)
       guard (>= 0.8.4)
     hike (1.2.1)
-    i18n (0.6.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     journey (1.0.4)
     jquery-rails (2.0.2)
       railties (>= 3.2.0, < 5.0)