diff --git a/background-processing/ExampleApp/Gemfile b/background-processing/ExampleApp/Gemfile
index 8af429b..f70ac61 100644
--- a/background-processing/ExampleApp/Gemfile
+++ b/background-processing/ExampleApp/Gemfile
@@ -10,9 +10,9 @@ gem "aws-sdk"
 gem 'sidekiq'
 gem 'sinatra', github: 'sinatra/sinatra'
 
-gem 'sass-rails', '~> 5.0'
+gem 'sass-rails', '~> 5.0', '>= 5.0.5'
 gem 'uglifier', '>= 1.3.0'
-gem 'coffee-rails', '~> 4.2'
+gem 'coffee-rails', '~> 4.2', '>= 4.2.1'
 gem 'jquery-rails'
 gem 'turbolinks', '~> 5'
 gem 'jbuilder', '~> 2.5'