diff --git a/Gemfile.lock b/Gemfile.lock
index 88984751..5dd59e23 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -269,7 +269,7 @@ GEM
       rspec-expectations (~> 2.13.0)
       rspec-mocks (~> 2.13.0)
     ruby-graphviz (1.0.9)
-    rubyzip (0.9.9)
+    rubyzip (1.3.0)
     sass (3.2.1)
     sass-rails (3.2.5)
       railties (~> 3.2.0)