diff --git a/Gemfile.lock b/Gemfile.lock
index 9151e75..1432bb2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -46,7 +46,7 @@ GEM
       rack
     rake (12.0.0)
     rika-stevedore (1.7.4-java)
-    rubyzip (1.2.1)
+    rubyzip (1.3.0)
     sinatra (2.0.3)
       mustermann (~> 1.0)
       rack (~> 2.0)