diff --git a/bing-ads-reporting.gemspec b/bing-ads-reporting.gemspec
index 0d797b1..8f4efed 100644
--- a/bing-ads-reporting.gemspec
+++ b/bing-ads-reporting.gemspec
@@ -22,7 +22,7 @@ Gem::Specification.new do |gem|
   gem.add_dependency 'oauth2',   '~> 1.4.1'
   gem.add_dependency 'savon',    '~> 2.12.0'
 
-  gem.add_development_dependency 'reek', '~> 5.4.0'
+  gem.add_development_dependency 'reek', '~> 6.0.5'
   gem.add_development_dependency 'rspec', '~> 3.4.0'
   gem.add_development_dependency 'rubocop', '~> 0.70.0'
   gem.add_development_dependency 'rubocop-performance', '~> 1.3.0'