grape-app.gemspec in grape-app-0.3.17 vs grape-app.gemspec in grape-app-0.4.0

@@ -1,10 +1,10 @@
 # encoding: utf-8
 
 Gem::Specification.new do |s|
   s.name          = 'grape-app'
-  s.version       = '0.3.17'
+  s.version       = '0.4.0'
   s.authors       = ['Black Square Media Ltd']
   s.email         = ['[e-mail]']
   s.summary       = %{Stanalone Grape API apps}
   s.description   = %{}
   s.homepage      = 'https://github.com/bsm/grape-app'
@@ -12,15 +12,14 @@
 
   s.files         = `git ls-files -z`.split("\x0").reject {|f| f.match(%r{^spec/}) }
   s.test_files    = `git ls-files -z -- spec/*`.split("\x0")
   s.executables   = ['grape-app']
   s.require_paths = ['lib']
-  s.required_ruby_version = '>= 1.9.3'
+  s.required_ruby_version = '>= 2.2'
 
   s.add_dependency 'grape'
   s.add_dependency 'grape-entity'
   s.add_dependency 'activesupport'
-  s.add_dependency 'activesupport-json_encoder'
   s.add_dependency 'hashie-forbidden_attributes'
   s.add_dependency 'rack-cors'
   s.add_dependency 'rack-ssl-enforcer'
   s.add_dependency 'thor'