diff --git a/rack-attack.gemspec b/rack-attack.gemspec
index cf7db71f..4cbcd51c 100644
--- a/rack-attack.gemspec
+++ b/rack-attack.gemspec
@@ -35,7 +35,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency "bundler", ">= 1.17", "< 3.0"
   s.add_development_dependency 'minitest', "~> 5.11"
   s.add_development_dependency "minitest-stub-const", "~> 0.6"
-  s.add_development_dependency 'rack-test', "~> 1.0"
+  s.add_development_dependency 'rack-test', "~> 2.0"
   s.add_development_dependency 'rake', "~> 13.0"
   s.add_development_dependency "rubocop", "0.89.1"
   s.add_development_dependency "rubocop-performance", "~> 1.5.0"