Gemfile in asciidoctor-epub3-1.5.0.alpha.18 vs Gemfile in asciidoctor-epub3-1.5.0.alpha.19

@@ -12,9 +12,6 @@
 end
 
 group :optional do
   # epubcheck-ruby might be safe to be converted into runtime dependency, but could have issues when packaged into asciidoctorj-epub3
   gem 'epubcheck-ruby', '~> 4.2.4.0'
-  # We would like to make kindlegen a runtime dependency, but can't because of the way asciidoctorj-epub3 packaging works
-  # See https://github.com/asciidoctor/asciidoctor-epub3/issues/288
-  gem 'kindlegen', '~> 3.0.3'
 end