diff --git a/2018/Gemfile.lock b/2018/Gemfile.lock
index 1b6eee30..fd790c68 100644
--- a/2018/Gemfile.lock
+++ b/2018/Gemfile.lock
@@ -219,7 +219,7 @@ GEM
     ruby-enum (0.7.2)
       i18n
     ruby_dep (1.5.0)
-    rubyzip (1.2.2)
+    rubyzip (2.3.2)
     safe_yaml (1.0.4)
     sass (3.6.0)
       sass-listen (~> 4.0.0)