jekyll-diagrams.gemspec in jekyll-diagrams-0.4.1 vs jekyll-diagrams.gemspec in jekyll-diagrams-0.4.2

@@ -1,26 +1,30 @@
-$LOAD_PATH.unshift File.expand_path('../lib', __FILE__)
+lib = File.expand_path('../lib', __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 
 require 'jekyll/diagrams/version'
 
 Gem::Specification.new do |spec|
-  spec.required_ruby_version = ">= 2.3.7"
+  spec.required_ruby_version = '>= 2.3.7'
 
-  spec.name          = "jekyll-diagrams"
+  spec.name          = 'jekyll-diagrams'
   spec.version       = Jekyll::Diagrams::VERSION
-  spec.authors       = ["zhustec"]
-  spec.email         = "[e-mail]"
+  spec.authors       = ['zhustec']
+  spec.email         = ['[e-mail]']
 
-  spec.summary       = "Jekyll plugins for diagrams support"
-  spec.description   = "Jekyll plugins for diagrams support, including Graphviz, Blockdiag, Seqdiag and so on."
-  spec.homepage      = "https://github.com/zhustec/jekyll-diagrams"
-  spec.license       = "MIT"
+  spec.summary       = 'Jekyll plugins for diagrams support'
+  spec.description   = 'Jekyll plugins for diagrams support, including Graphviz, Blockdiag, Seqdiag and so on.'
+  spec.homepage      = 'https://github.com/zhustec/jekyll-diagrams'
+  spec.license       = 'MIT'
 
-  spec.files         = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
-  spec.require_paths = ["lib"]
+  spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
+    `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+  end
 
-  spec.add_dependency "jekyll", "~> 3.6"
+  spec.require_paths = ['lib']
 
-  spec.add_development_dependency "bundler", "~> 1.15"
-  spec.add_development_dependency "rake", "~> 12.1"
-  spec.add_development_dependency "minitest", "~> 5.1"
+  spec.add_dependency 'jekyll', '~> 3.6'
+
+  spec.add_development_dependency 'bundler', '~> 1.16'
+  spec.add_development_dependency 'rake', '~> 12.3'
+  spec.add_development_dependency 'minitest', '~> 5.1'
 end