diff --git a/Gemfile.lock b/Gemfile.lock
index 6f89d21..4df1774 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -22,7 +22,7 @@ GEM
     rspec-expectations (2.9.0)
       diff-lcs (~> 1.1.3)
     rspec-mocks (2.9.0)
-    rubyzip (1.2.3)
+    rubyzip (2.3.2)
     selenium-webdriver (2.20.0)
       childprocess (>= 0.2.5)
       ffi (~> 1.0)