diff --git a/Gemfile.lock b/Gemfile.lock
index 4637925..9ca6edd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -184,7 +184,7 @@ GEM
       rspec-core (~> 2.12.0)
       rspec-expectations (~> 2.12.0)
       rspec-mocks (~> 2.12.0)
-    rubyzip (0.9.9)
+    rubyzip (1.3.0)
     sanitize (2.0.3)
       nokogiri (>= 1.4.4, < 1.6)
     sass (3.2.3)