diff --git a/CHANGELOG.md b/CHANGELOG.md
index 18902f1..358f629 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,9 @@ Which is based on [Keep A Changelog](http://keepachangelog.com/)
 
 ## [Unreleased]
 
+### Security
+- updated yard dependency to `~> 0.9.11` per: https://nvd.nist.gov/vuln/detail/CVE-2017-17042 (@majormoses)
+
 ## [3.0.0] - 2018-03-17
 ### Security
 - updated rubocop dependency to `~> 0.51.0` per: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8418. (@majormoses)
diff --git a/sensu-plugins-redis.gemspec b/sensu-plugins-redis.gemspec
index 9381f06..bb54d70 100644
--- a/sensu-plugins-redis.gemspec
+++ b/sensu-plugins-redis.gemspec
@@ -52,5 +52,5 @@ Gem::Specification.new do |s| # rubocop:disable Metrics/BlockLength
   s.add_development_dependency 'rubocop',                   '~> 0.51.0'
   s.add_development_dependency 'serverspec',                '~> 2.36.1'
   s.add_development_dependency 'test-kitchen',              '~> 1.16.0'
-  s.add_development_dependency 'yard',                      '~> 0.8'
+  s.add_development_dependency 'yard',                      '~> 0.9.11'
 end