diff --git a/pkgs/applications/misc/gollum/Gemfile b/pkgs/applications/misc/gollum/Gemfile
index a15179970b3..5a35216de1f 100644
--- a/pkgs/applications/misc/gollum/Gemfile
+++ b/pkgs/applications/misc/gollum/Gemfile
@@ -1,8 +1,10 @@
 source 'https://rubygems.org'
+
 gem 'gollum'
 
-gem 'asciidoctor'
-gem 'creole'
-gem 'wikicloth'
-gem 'org-ruby'
-gem 'RedCloth'
+# Support for extra markups
+gem 'asciidoctor' # AsciiDoc
+gem 'creole'      # Creole
+gem 'wikicloth'   # MediaWiki
+gem 'org-ruby'    # Org
+gem 'RedCloth'    # Textile