diff --git a/Gemfile.lock b/Gemfile.lock
index 0c20b6b..1366a7b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -30,10 +30,12 @@ GEM
       multi_json (~> 1.0)
     arel (3.0.0)
     builder (3.0.0)
+    concurrent-ruby (1.1.5)
     erubis (2.7.0)
     git (1.2.5)
     hike (1.2.1)
-    i18n (0.6.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jeweler (1.6.4)
       bundler (~> 1.0)
       git (>= 1.2.5)