activeadmin-mongoid.gemspec in activeadmin-mongoid-0.9.0 vs activeadmin-mongoid.gemspec in activeadmin-mongoid-1.0.0

@@ -15,13 +15,13 @@
   gem.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
   gem.name          = 'activeadmin-mongoid'
   gem.require_paths = ['lib']
   gem.version       = ActiveAdmin::Mongoid::VERSION
   gem.license       = 'MIT'
-  
-  gem.required_ruby_version = '>= 2.3'
 
-  gem.add_runtime_dependency 'mongoid',     ['~> 6.0']
+  gem.required_ruby_version = '>= 2.4'
+
+  gem.add_runtime_dependency 'mongoid',     '>= 6.0', '< 8.a'
   gem.add_runtime_dependency 'activeadmin', '>= 1.4.3'
   gem.add_runtime_dependency 'kaminari-mongoid'
   gem.add_runtime_dependency 'jquery-rails'
   gem.add_runtime_dependency 'sass-rails',  ['>= 3.1.4']