- ruby (>= 1:2.5.1)
- ruby-asciidoctor (>= 1.5.0)
- ruby-concurrent (>= 1.1~)
- ruby-prawn (>= 2.2.0)
- ruby-prawn-icon (>= 1.4.0)
- ruby-prawn-svg (>= 0.31.0)
- ruby-prawn-table (>= 0.2.2)
- ruby-safe-yaml (>= 1.0.4)
- ruby-thread-safe (>= 0.3.6)
- ruby-treetop (>= 1.5.3)