Gemfile in github-markup-1.5.0 vs Gemfile in github-markup-1.6.0

@@ -8,7 +8,7 @@
 gem "commonmarker", "~> 0.14.12"
 gem "rdoc", "~>3.6"
 gem "org-ruby", "= 0.9.9"
 gem "creole", "~>0.3.6"
 gem "wikicloth", "=0.8.3"
-gem "asciidoctor", "= 1.5.2"
+gem "asciidoctor", "= 1.5.5"
 gem "rake"