diff --git a/Gemfile.lock b/Gemfile.lock
index 2fa3fdf..978e892 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -341,7 +341,7 @@ GEM
     ruby-vips (2.0.15)
       ffi (~> 1.9)
     ruby_dep (1.5.0)
-    rubyzip (1.2.4)
+    rubyzip (1.3.0)
     rugged (0.28.3.1)
     safe_yaml (1.0.5)
     sass (3.7.4)