diff --git a/z_rails/Gemfile.lock b/z_rails/Gemfile.lock
index b324d6f..72a51ae 100644
--- a/z_rails/Gemfile.lock
+++ b/z_rails/Gemfile.lock
@@ -119,7 +119,7 @@ GEM
       activesupport (>= 3.0)
       railties (>= 3.0)
       rspec (~> 2.11.0)
-    rubyzip (0.9.9)
+    rubyzip (2.0.0)
     sass (3.1.20)
     sass-rails (3.2.5)
       railties (~> 3.2.0)