diff --git a/Gemfile.lock b/Gemfile.lock
index 261c3577..858f9e85 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -37,9 +37,11 @@ GEM
       multi_json (~> 1.0)
     arel (3.0.0)
     builder (3.0.0)
+    concurrent-ruby (1.1.10)
     erubis (2.7.0)
     hike (1.2.1)
-    i18n (0.6.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     journey (1.0.1)
     json (1.6.5)
     mail (2.4.1)