diff --git a/admin/Gemfile b/admin/Gemfile
index c19542b30..fe8c1df52 100644
--- a/admin/Gemfile
+++ b/admin/Gemfile
@@ -72,6 +72,7 @@ gem 'postgres_ext', '1.0.0'
 gem 'resque_mailer'
 gem 'rest-client'
 gem 'iso-639'
+gem 'rubyzip'
 
 group :libv8 do
   gem 'libv8', "~> 3.11.8"
diff --git a/websocket-gateway/Gemfile b/websocket-gateway/Gemfile
index 026a88ef2..d34aefc34 100644
--- a/websocket-gateway/Gemfile
+++ b/websocket-gateway/Gemfile
@@ -50,6 +50,7 @@ gem 'rest-client'
 gem 'netaddr'
 gem 'iso-639'
 gem 'language_list'
+gem 'rubyzip'
 
 group :development do
 	gem 'pry'