diff --git a/Gemfile.lock b/Gemfile.lock
index ce95bad..1da9d7f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -154,7 +154,7 @@ GEM
       rspec-core (~> 2.13.0)
       rspec-expectations (~> 2.13.0)
       rspec-mocks (~> 2.13.0)
-    rubyzip (0.9.9)
+    rubyzip (2.0.0)
     sass (3.2.9)
     sass-rails (3.2.6)
       railties (~> 3.2.0)