diff --git a/Gemfile.lock b/Gemfile.lock
index bd3fba6..6a9b4dd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -90,7 +90,7 @@ GEM
       rake (>= 0.8.7)
       thor (~> 0.14.4)
     rake (0.8.7)
-    rubyzip (0.9.4)
+    rubyzip (2.0.0)
     selenium-webdriver (0.1.2)
       childprocess (~> 0.1.5)
       ffi (~> 0.6.3)