diff --git a/Gemfile b/Gemfile
index ad3b22d..b05953e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,7 +7,7 @@ group :development do
   gem 'rspec', '~> 3.0'
 
   gem 'kramdown'
-  gem 'yard', '~> 0.8'
+  gem 'yard', '~> 0.9'
 end
 
 group :test do