diff --git a/dyndnsd.gemspec b/dyndnsd.gemspec
index c3006e5..dace6be 100644
--- a/dyndnsd.gemspec
+++ b/dyndnsd.gemspec
@@ -31,6 +31,6 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'rake'
   s.add_development_dependency 'rspec'
   s.add_development_dependency 'rack-test'
-  s.add_development_dependency 'rubocop', '~> 0.72.0'
+  s.add_development_dependency 'rubocop', '~> 0.73.0'
   s.add_development_dependency 'bundler-audit'
 end