mongoid-userstamps.gemspec in mongoid-userstamps-3.0.0.alpha1 vs mongoid-userstamps.gemspec in mongoid-userstamps-3.1.0

@@ -18,9 +18,9 @@
   s.test_files    = s.files.grep(%r{^(test|spec|features)/})
   s.require_paths = ['lib']
 
   s.post_install_message = File.read('UPGRADING') if File.exists?('UPGRADING')
 
-  s.add_dependency 'mongoid', '~> 5.0'
-  s.add_dependency 'activesupport', '~> 4.0'
+  s.add_dependency 'mongoid',       '>= 5.0.0', '< 6.1.0'
+  s.add_dependency 'activesupport', '>= 4.2.0', '< 5.1.0'
 end