We should be able to update minor versions of stable libs without breaking
gitlab Gemfile

Index: gitlab/Gemfile
===================================================================
--- gitlab.orig/Gemfile
+++ gitlab/Gemfile
@@ -97,7 +97,7 @@ gem "seed-fu", '~> 2.3.5'
 # Markdown and HTML processing
 gem 'html-pipeline', '~> 1.11.0'
 gem 'task_list',     '~> 1.0.2', require: 'task_list/railtie'
-gem 'github-markup', '~> 1.3.1'
+gem 'github-markup', '~> 1.3'
 gem 'redcarpet',     '~> 3.3.3'
 gem 'RedCloth',      '~> 4.2.9'
 gem 'rdoc',          '~> 4.1'