Gemfile in x25519-0.0.0 vs Gemfile in x25519-0.1.0

@@ -3,9 +3,10 @@
 source "https://rubygems.org"
 
 gemspec
 
 group :development, :test do
-  gem "rake"
-  gem "rspec",   "~> 3.7", require: false
+  gem "rake", require: false
+  gem "rake-compiler", "~> 1.0", require: false
+  gem "rspec", "~> 3.7", require: false
   gem "rubocop", "0.51.0", require: false
 end