grape.gemspec in grape-1.7.0 vs grape.gemspec in grape-1.7.1

@@ -22,15 +22,15 @@
 
   s.add_runtime_dependency 'activesupport'
   s.add_runtime_dependency 'builder'
   s.add_runtime_dependency 'dry-types', '>= 1.1'
   s.add_runtime_dependency 'mustermann-grape', '~> 1.0.0'
-  s.add_runtime_dependency 'rack', '>= 1.3.0'
+  s.add_runtime_dependency 'rack', '>= 1.3.0', '< 3'
   s.add_runtime_dependency 'rack-accept'
 
   s.files         = %w[CHANGELOG.md CONTRIBUTING.md README.md grape.png UPGRADING.md LICENSE]
   s.files        += %w[grape.gemspec]
   s.files        += Dir['lib/**/*']
   s.test_files    = Dir['spec/**/*']
   s.require_paths = ['lib']
-  s.required_ruby_version = '>= 2.5.0'
+  s.required_ruby_version = '>= 2.6.0'
 end