diff --git a/docile.gemspec b/docile.gemspec
index 10d872f..be0fb66 100644
--- a/docile.gemspec
+++ b/docile.gemspec
@@ -26,7 +26,7 @@ Gem::Specification.new do |s|
   # Github flavored markdown in YARD documentation
   # http://blog.nikosd.com/2011/11/github-flavored-markdown-in-yard.html
   s.add_development_dependency 'yard'
-  s.add_development_dependency 'redcarpet'
+  s.add_development_dependency 'redcarpet', '2.3.0' # because 1.8
   s.add_development_dependency 'github-markup'
 
   # Coveralls test coverage tool