diff --git a/Gemfile.lock b/Gemfile.lock
index b71e35a..7274be2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -10,6 +10,7 @@ GEM
     addressable (2.4.0)
     colorator (0.1)
     colored (1.2)
+    concurrent-ruby (1.1.10)
     ethon (0.9.0)
       ffi (>= 1.3.0)
     ffi (1.9.10)
@@ -23,7 +24,8 @@ GEM
       parallel (~> 1.3)
       typhoeus (~> 0.7)
       yell (~> 2.0)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jekyll (3.1.6)
       colorator (~> 0.1)
       jekyll-sass-converter (~> 1.0)