diff --git a/Gemfile.lock b/Gemfile.lock
index 141ca11..1eafb62 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -49,6 +49,7 @@ GEM
       rack-test (>= 0.5.4)
       xpath (~> 2.0)
     coderay (1.1.0)
+    concurrent-ruby (1.1.10)
     diff-lcs (1.2.5)
     erubis (2.7.0)
     execjs (2.2.2)
@@ -67,7 +68,8 @@ GEM
     hike (1.2.3)
     httpi (2.2.7)
       rack
-    i18n (0.6.11)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     json (1.8.1)
     macaddr (1.7.1)
       systemu (~> 2.6.2)