em-http-request.gemspec in em-http-request-1.1.5 vs em-http-request.gemspec in em-http-request-1.1.6

@@ -21,10 +21,10 @@
   s.add_dependency 'eventmachine', '>= 1.0.3'
   s.add_dependency 'http_parser.rb', '>= 0.6.0'
 
   s.add_development_dependency 'mongrel', '~> 1.2.0.pre2'
   s.add_development_dependency 'multi_json'
-  s.add_development_dependency 'rack'
+  s.add_development_dependency 'rack', '< 2.0'
   s.add_development_dependency 'rake'
   s.add_development_dependency 'rspec'
 
   s.files         = `git ls-files`.split("\n")
   s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")