diff --git a/Gemfile.lock b/Gemfile.lock
index 52efcdb..3c773bf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -45,13 +45,15 @@ GEM
       tzinfo (~> 1.1)
     arel (6.0.2)
     builder (3.2.2)
+    concurrent-ruby (1.1.10)
     diff-lcs (1.2.5)
     docile (1.1.5)
     erubis (2.7.0)
     gli (2.13.1)
     globalid (0.3.5)
       activesupport (>= 4.1.0)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     json (1.8.3)
     loofah (2.0.2)
       nokogiri (>= 1.5.9)