diff --git a/devcenter.gemspec b/devcenter.gemspec
index ae9373b..2c7312a 100644
--- a/devcenter.gemspec
+++ b/devcenter.gemspec
@@ -27,7 +27,7 @@ Gem::Specification.new do |gem|
   gem.add_runtime_dependency('listen', '~> 3.4.1')
   gem.add_runtime_dependency('netrc', '~> 0.11.0')
   gem.add_runtime_dependency('rack', '~> 2.2.8')
-  gem.add_runtime_dependency('rack-protection', '~> 2.2.4')
+  gem.add_runtime_dependency('rack-protection', '>= 2.2.4', '< 3.2.0')
   gem.add_runtime_dependency('sinatra', '~> 2.2.4')
   gem.add_runtime_dependency('thin', '~> 1.8.2')
   gem.add_runtime_dependency('tilt', '~> 2.0.11')