diff --git a/Gemfile.lock b/Gemfile.lock
index 23731cd..0a34875 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -57,6 +57,7 @@ GEM
     childprocess (0.5.5)
       ffi (~> 1.0, >= 1.0.11)
     coderay (1.1.0)
+    concurrent-ruby (1.1.10)
     diff-lcs (1.2.5)
     erubis (2.7.0)
     ffi (1.9.6)
@@ -81,7 +82,8 @@ GEM
       spork (>= 0.8.4)
     hike (1.2.3)
     hitimes (1.2.2)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     json (1.8.2)
     launchy (2.4.3)
       addressable (~> 2.3)