diff --git a/dyndnsd.gemspec b/dyndnsd.gemspec
index 34daaa8..7c5c338 100644
--- a/dyndnsd.gemspec
+++ b/dyndnsd.gemspec
@@ -42,6 +42,6 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'rspec'
   s.add_development_dependency 'rubocop', '~> 1.16.0'
   s.add_development_dependency 'rubocop-rake', '~> 0.5.1'
-  s.add_development_dependency 'rubocop-rspec', '~> 2.3.0'
+  s.add_development_dependency 'rubocop-rspec', '~> 2.4.0'
   s.add_development_dependency 'solargraph', '~> 0.41.1'
 end