diff --git a/vedeu.gemspec b/vedeu.gemspec
index cf12aa456..d0096ceb9 100644
--- a/vedeu.gemspec
+++ b/vedeu.gemspec
@@ -27,10 +27,10 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'minitest',           '5.9.0'
   spec.add_development_dependency 'minitest-reporters', '1.1.9'
   spec.add_development_dependency 'mocha',              '1.1.0'
-  spec.add_development_dependency 'rubocop',            '0.40.0'
+  spec.add_development_dependency 'rubocop',            '0.52.0'
   spec.add_development_dependency 'simplecov',          '0.11.2'
   spec.add_development_dependency 'simplecov-console',  '0.3.0'
-  spec.add_development_dependency 'yard',               '0.8.7.6'
+  spec.add_development_dependency 'yard',               '0.9.12'
 
   spec.add_dependency 'bundler',       '~> 1.12'
   spec.add_dependency 'rake',          '~> 10.5'