diff --git a/dyndnsd.gemspec b/dyndnsd.gemspec
index 569398b..ff153e4 100644
--- a/dyndnsd.gemspec
+++ b/dyndnsd.gemspec
@@ -47,5 +47,5 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'rubocop', '~> 1.75.1'
   s.add_development_dependency 'rubocop-rake', '~> 0.7.1'
   s.add_development_dependency 'rubocop-rspec', '~> 3.6.0'
-  s.add_development_dependency 'solargraph', '~> 0.49.0'
+  s.add_development_dependency 'solargraph', '~> 0.55.0'
 end