diff --git a/Gemfile.lock b/Gemfile.lock
index 9deb744..35e79d5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -51,6 +51,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.4.0)
+    concurrent-ruby (1.1.5)
     database_cleaner (0.7.0)
     diff-lcs (1.1.3)
     erubis (2.7.0)
@@ -63,7 +64,8 @@ GEM
       railties (>= 3.0.0)
     ffi (1.3.1)
     hike (1.2.1)
-    i18n (0.6.1)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     journey (1.0.4)
     jquery-rails (2.1.4)
       railties (>= 3.0, < 5.0)