jekyll-sitemap.gemspec in jekyll-sitemap-1.3.0 vs jekyll-sitemap.gemspec in jekyll-sitemap-1.3.1

@@ -16,15 +16,15 @@
   spec.files         = `git ls-files -z`.split("\x0")
   spec.executables   = spec.files.grep(%r!^bin/!) { |f| File.basename(f) }
   spec.test_files    = spec.files.grep(%r!^(test|spec|features)/!)
   spec.require_paths = ["lib"]
 
-  spec.required_ruby_version = ">= 2.4.0"
+  spec.required_ruby_version = ">= 2.3.0"
 
   spec.add_dependency "jekyll", ">= 3.7", "< 5.0"
 
   spec.add_development_dependency "bundler"
-  spec.add_development_dependency "jekyll-last-modified-at", "0.3.4"
+  spec.add_development_dependency "jekyll-last-modified-at", "~> 1.0"
   spec.add_development_dependency "rake"
   spec.add_development_dependency "rspec", "~> 3.0"
   spec.add_development_dependency "rubocop-jekyll", "~> 0.4"
 end