Gemfile in fast_excel-0.2.1 vs Gemfile in fast_excel-0.2.2

@@ -1,15 +1,17 @@
 source 'https://rubygems.org'
 
 gem 'ffi'
 gem 'ffi_gen', require: false
 
+gem 'rake'
+
 gem 'roo', '2.7.1', git: 'https://github.com/roo-rb/roo.git'
 
 gem 'minitest'
 gem 'minitest-reporters'
 
 # For benchmakrs
 gem 'axlsx', git: 'https://github.com/randym/axlsx.git'
 gem 'write_xlsx'
 gem 'benchmark-ips'
-gem 'process_memory', git: 'https://github.com/paxa/process_memory'
+gem 'process_memory', git: 'https://github.com/paxa/process_memory', platforms: :ruby