diff --git a/Gemfile.lock b/Gemfile.lock
index 03314fa408..42ef4e364e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -20,6 +20,7 @@ GEM
       ffi (~> 1.0, >= 1.0.11)
     colorator (0.1)
     colored (1.2)
+    concurrent-ruby (1.1.10)
     cri (2.7.0)
       colored (~> 1.2)
     diff-lcs (1.2.5)
@@ -50,7 +51,8 @@ GEM
       parallel (~> 1.3)
       typhoeus (~> 0.7)
       yell (~> 2.0)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jekyll (3.0.1)
       colorator (~> 0.1)
       jekyll-sass-converter (~> 1.0)