diff --git a/lib/mongoid/enum/version.rb b/lib/mongoid/enum/version.rb
index 0067529..f6479e1 100644
--- a/lib/mongoid/enum/version.rb
+++ b/lib/mongoid/enum/version.rb
@@ -1,5 +1,5 @@
 module Mongoid
   module Enum
-    VERSION = "0.4.0"
+    VERSION = "0.5.0"
   end
 end
diff --git a/mongoid-enum.gemspec b/mongoid-enum.gemspec
index bd9465d..70c5628 100644
--- a/mongoid-enum.gemspec
+++ b/mongoid-enum.gemspec
@@ -18,11 +18,11 @@ Gem::Specification.new do |spec|
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ["lib"]
 
-  spec.add_runtime_dependency "mongoid", "~> 5.0"
+  spec.add_runtime_dependency "mongoid", ">= 5.0", "<= 8.0"
 
   spec.add_development_dependency "bundler", "~> 1.3"
   spec.add_development_dependency "rake"
   spec.add_development_dependency "rspec", "~> 3.1"
   spec.add_development_dependency "guard-rspec", "~> 4.6.2"
-  spec.add_development_dependency "mongoid-rspec", "~> 3.0"
+  spec.add_development_dependency "mongoid-rspec", '~> 4.1.0'
 end