diff --git a/Gemfile b/Gemfile
index 4b4ea2d..119327d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,6 +8,6 @@ group :development do
   gem "jeweler", "~> 1.5.2"
   gem "simplecov", ">= 0.3.8", :require => false
   gem "rspec", "~> 2.4"
-  gem "yard", "~> 0.6"
+  gem "yard", "~> 0.9", ">= 0.9.35"
   gem "mocha", "~> 0.9.11"
 end