diff --git a/static/multiselect/Gemfile.lock b/static/multiselect/Gemfile.lock
index 42aafba..4e8038e 100644
--- a/static/multiselect/Gemfile.lock
+++ b/static/multiselect/Gemfile.lock
@@ -220,7 +220,7 @@ GEM
     ruby-enum (0.7.2)
       i18n
     ruby_dep (1.5.0)
-    rubyzip (1.2.1)
+    rubyzip (2.3.0)
     safe_yaml (1.0.4)
     sass (3.5.6)
       sass-listen (~> 4.0.0)