Gemfile in voxpupuli-release-1.1.0 vs Gemfile in voxpupuli-release-1.2.0

- old
+ new

@@ -1,7 +1,7 @@
 source ENV['GEM_SOURCE'] || 'https://rubygems.org'
 
 gemspec
 
-group :release do
-  gem 'github_changelog_generator', '>= 1.16.1',  :require => false
+group :release, optional: true do
+  gem 'github_changelog_generator', '>= 1.16.1',  :require => false if RUBY_VERSION >= '2.5.0'
 end