diff --git a/dyndnsd.gemspec b/dyndnsd.gemspec
index 7b9f947..0dcb64e 100644
--- a/dyndnsd.gemspec
+++ b/dyndnsd.gemspec
@@ -45,5 +45,5 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'rubocop', '~> 1.70.0'
   s.add_development_dependency 'rubocop-rake', '~> 0.6.0'
   s.add_development_dependency 'rubocop-rspec', '~> 3.3.0'
-  s.add_development_dependency 'solargraph', '~> 0.49.0'
+  s.add_development_dependency 'solargraph', '~> 0.51.0'
 end