diff --git a/Gemfile.lock b/Gemfile.lock
index 1ffff2b..83a3078 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -158,7 +158,7 @@ GEM
       railties (~> 3.0)
       rspec (~> 2.5.0)
     ruby-progressbar (1.0.2)
-    rubyzip (0.9.9)
+    rubyzip (1.2.4)
     sass (3.2.1)
     sass-rails (3.2.5)
       railties (~> 3.2.0)