backticks.gemspec in backticks-1.0.2 vs backticks.gemspec in backticks-1.0.3

@@ -17,11 +17,11 @@
   spec.files         = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   spec.bindir        = 'exe'
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
 
-  spec.required_ruby_version = Gem::Requirement.new("~> 2.0")
+  spec.required_ruby_version = Gem::Requirement.new('>= 2.0', '< 4.0')
 
-  spec.add_development_dependency 'bundler', '~> 1.10'
+  spec.add_development_dependency 'bundler', '~> 2.3'
   spec.add_development_dependency 'rake', '~> 10.0'
   spec.add_development_dependency 'rspec'
 end