diff --git a/Gemfile.lock b/Gemfile.lock
index b6243ef..13c3e47 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -52,6 +52,7 @@ GEM
     builder (3.0.0)
     childprocess (0.2.2)
       ffi (~> 1.0.6)
+    concurrent-ruby (1.1.10)
     crack (0.1.8)
     cucumber (0.10.7)
       builder (>= 2.1.2)
@@ -67,7 +68,8 @@ GEM
     gherkin (2.4.18)
       json (>= 1.4.6)
     hike (1.2.1)
-    i18n (0.6.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     json (1.5.4)
     mail (2.3.0)
       i18n (>= 0.4.0)