deprecation errors when running rspec tests after updating to rails 5.0.0

Question

I just upgraded an application from rails 4 to rails 5.0.0, however now when running my rspec tests I'm getting these deprecation warnings (they don't show up when running my server):

DEPRECATION WARNING: alias_method_chain is deprecated. Please, use Module#prepend instead. From module, you can access the original method using super. (called from <top (required)> at /Users/Documents/app/config/environment.rb:5)
DEPRECATION WARNING: alias_method_chain is deprecated. Please, use Module#prepend instead. From module, you can access the original method using super. (called from <top (required)> at /Users/Documents/app/config/environment.rb:5)
DEPRECATION WARNING: after_filter is deprecated and will be removed in Rails 5.1. Use after_action instead. (called from <top (required)> at /Users/Documents/app/config/environment.rb:5)

The alias_method_chain warning does show up twice. I'm not using neither alias_method_chain or after_filter in any of my code.

The gems are using for the test enviroment:

group :development do
  gem 'dotenv-rails', '2.1.1'
  gem 'byebug', '9.0.5'
  gem 'bullet', '5.2.0'
  gem 'bundler-audit', '0.5.0'
  gem 'spring', '1.7.2'
  gem 'web-console', '3.3.1'
  gem 'guard-rspec', '4.7.3'
end

group :test do
  gem 'capybara', '~> 2.1'
  gem 'poltergeist', '1.10.0'
  gem 'formulaic', '0.3.0'
  gem 'rspec-rails', '3.5.1'
  gem 'rspec-mocks', '3.5.0'
  gem 'shoulda-matchers', '3.1.1'
  gem 'timecop-console', '0.1.0'
  gem 'database_cleaner', '1.5.3'
  gem 'simplecov', '0.12.0'
  gem 'rails-controller-testing', '0.1.1'
end

group :development, :test do
  gem 'pry-rails', '0.3.4'
  gem 'factory_girl', '4.7.0'
  gem 'faker', '1.6.6'
  gem 'jasmine', '2.4.0'
  gem 'jasmine-ajax', '0.0.2'
end

I'm not using versions in my gemfile, I just included the current versions I'm using. Any clues of what's causing the deprecation warnings?

EDIT:

I found where the warnings are coming from, I'm using wicked_pdf, here's the issue

It seems it's been fixed, but I'm getting the deprecation warnings still even though I'm using the last version

Answer 1

The warnings were caused by the wicked_pdf gem, updating to version 1.1.0 solved the issue