key_tree.gemspec in key_tree-0.5.3 vs key_tree.gemspec in key_tree-0.6.0

@@ -1,31 +1,39 @@
+# frozen_string_literal: true
 
 lib = File.expand_path('lib', __dir__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
-require 'key_tree/version'
 
+begin
+  require 'git-version-bump'
+  GIT_VERSION = GVB.version.freeze
+rescue LoadError
+  GIT_VERSION = '0.0.0.UNDEF'
+end
+
 Gem::Specification.new do |spec|
   spec.name          = 'key_tree'
-  spec.version       = KeyTree::VERSION
-  spec.date          = KeyTree::DATE
+  spec.version       = GIT_VERSION
   spec.authors       = ['Calle Englund']
   spec.email         = ['[e-mail]']
 
   spec.summary       = 'Manage trees of keys'
-  spec.description   = spec.summary
   spec.homepage      = 'https://github.com/notcalle/ruby-keytree'
   spec.license       = 'MIT'
 
   spec.files         = `git ls-files -z`.split("\x0").reject do |f|
     f.match(%r{^(test|spec|features)/})
   end
   spec.bindir        = 'exe'
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
 
-  spec.add_dependency 'git-version-bump', '~> 0.15'
+  spec.platform = Gem::Platform::RUBY
+  spec.required_ruby_version = '~> 2.3'
 
   spec.add_development_dependency 'bundler', '~> 1.16'
+  spec.add_development_dependency 'git-version-bump', '~> 0.15'
   spec.add_development_dependency 'rake', '~> 10.0'
   spec.add_development_dependency 'rspec', '~> 3.0'
   spec.add_development_dependency 'rubocop', '~> 0.52'
+  spec.add_development_dependency 'ruby-prof', '~> 0.17'
 end