Gemfile in rubocop-md-0.1.0.pre vs Gemfile in rubocop-md-0.1.0

@@ -3,10 +3,10 @@
 git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
 
 # Specify your gem's dependencies in rubocop-md.gemspec
 gemspec
 
-gem "pry-byebug"
+gem "pry-byebug", platform: :mri
 
 local_gemfile = "Gemfile.local"
 
 if File.exist?(local_gemfile)
   eval(File.read(local_gemfile)) # rubocop:disable Security/Eval