diff --git a/dyndnsd.gemspec b/dyndnsd.gemspec
index 1ae47f5..d39e0b9 100644
--- a/dyndnsd.gemspec
+++ b/dyndnsd.gemspec
@@ -43,6 +43,6 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'rspec'
   s.add_development_dependency 'rubocop', '~> 1.25.0'
   s.add_development_dependency 'rubocop-rake', '~> 0.6.0'
-  s.add_development_dependency 'rubocop-rspec', '~> 2.8.0'
+  s.add_development_dependency 'rubocop-rspec', '~> 2.9.0'
   s.add_development_dependency 'solargraph', '~> 0.44.0'
 end