diff --git a/Gemfile.lock b/Gemfile.lock
index 458156f..9006a00 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,9 +7,11 @@ GEM
       chunky_png (~> 1.2)
       fssm (>= 0.2.7)
       sass (~> 3.1)
+    concurrent-ruby (1.1.10)
     fssm (0.2.7)
     haml (3.1.2)
-    i18n (0.6.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     rack (1.3.2)
     rack-test (0.6.0)
       rack (>= 1.0)