upperkut.gemspec in upperkut-0.7.2 vs upperkut.gemspec in upperkut-0.7.4

@@ -20,10 +20,10 @@
   spec.require_paths = ['lib']
 
   spec.required_ruby_version = '>= 2.2.2'
 
   spec.add_dependency 'connection_pool', '~> 2.2', '>= 2.2.2'
-  spec.add_dependency 'redis',           '>= 3.3.3', '< 5'
-  spec.add_development_dependency 'bundler', '~> 1.16'
+  spec.add_dependency 'redis', '>= 4.1.0', '< 5.0.0'
+  spec.add_development_dependency 'bundler', '>= 1.16'
   spec.add_development_dependency 'rake', '~> 10.0'
   spec.add_development_dependency 'rspec', '~> 3.0'
 end