callgraphy.gemspec in callgraphy-0.2.0 vs callgraphy.gemspec in callgraphy-0.2.1

@@ -1,6 +1,6 @@
-lib = File.expand_path("../lib", __FILE__)
+lib = File.expand_path("lib", __dir__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 require "callgraphy/version"
 
 Gem::Specification.new do |spec|
   spec.name          = "callgraphy"
@@ -15,16 +15,14 @@
   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 = "~> 2.1"
+  spec.required_ruby_version = ">= 2.7", "< 3.0"
 
-  spec.add_runtime_dependency "ruby-graphviz", "~> 1.2", ">= 1.2.0"
+  spec.add_runtime_dependency "ruby-graphviz", "~> 1.2"
 
-  spec.add_development_dependency "bundler", "~> 1.11", ">= 1.11.0"
-  spec.add_development_dependency "mutant-rspec", "~> 0.8.0"
-  spec.add_development_dependency "rake", "~> 11.1", ">= 11.1.0"
-  spec.add_development_dependency "rspec", "~> 3.4", ">= 3.4.0"
-  spec.add_development_dependency "rubocop", "~> 0.38"
-  spec.add_development_dependency "simplecov", "~> 0.11"
+  spec.add_development_dependency "rake", "~> 13.0"
+  spec.add_development_dependency "rspec", "~> 3.11"
+  spec.add_development_dependency "rubocop", "~> 1.32"
+  spec.add_development_dependency "simplecov", "~> 0.21"
 end