diff --git a/Gemfile.lock b/Gemfile.lock
index 8186253..8a3928f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -51,6 +51,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.6.3)
+    concurrent-ruby (1.1.5)
     cucumber (1.3.6)
       builder (>= 2.1.2)
       diff-lcs (>= 1.1.3)
@@ -86,7 +87,8 @@ GEM
     gherkin (2.12.1)
       multi_json (~> 1.3)
     hike (1.2.3)
-    i18n (0.6.5)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     journey (1.0.4)
     jquery-rails (3.0.4)
       railties (>= 3.0, < 5.0)