diff --git a/todo/Gemfile.lock b/todo/Gemfile.lock
index a0975a3..ccfb862 100644
--- a/todo/Gemfile.lock
+++ b/todo/Gemfile.lock
@@ -44,6 +44,7 @@ GEM
     builder (2.1.2)
     childprocess (0.1.7)
       ffi (~> 0.6.3)
+    concurrent-ruby (1.1.10)
     configuration (1.2.0)
     database_cleaner (0.6.5)
     diff-lcs (1.1.2)
@@ -51,7 +52,8 @@ GEM
       abstract (>= 1.0.0)
     ffi (0.6.3)
       rake (>= 0.8.7)
-    i18n (0.5.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jquery-rails (0.2.7)
       rails (~> 3.0)
       thor (~> 0.14.4)