Gemfile in slack-ruby-client-0.5.4 vs Gemfile in slack-ruby-client-0.6.0

@@ -1,5 +1,6 @@
 source 'http://rubygems.org'
 
 gemspec
 
 gem ENV['CONCURRENCY'], require: false if ENV.key?('CONCURRENCY')
+gem 'picky' unless RUBY_PLATFORM == 'java'