diff --git a/trino-client.gemspec b/trino-client.gemspec
index 4d711226..49ba8c6e 100644
--- a/trino-client.gemspec
+++ b/trino-client.gemspec
@@ -29,7 +29,7 @@ Gem::Specification.new do |gem|
   gem.add_development_dependency "rake", [">= 0.9.2", "< 14.0"]
   gem.add_development_dependency "rspec", "~> 3.13.0"
   gem.add_development_dependency "webmock", ["~> 3.0"]
-  gem.add_development_dependency "addressable", "~> 2.8.1" # 2.5.0 doesn't support Ruby 1.9.3
+  gem.add_development_dependency "addressable", "~> 2.9.0" # 2.5.0 doesn't support Ruby 1.9.3
   gem.add_development_dependency "simplecov", "~> 0.22.0"
   gem.add_development_dependency "standard", "~> 1.54.0"
   gem.add_development_dependency "psych", "~> 3"