Support of Ruby 2.3 removed as its life ended

lib/wpscan/target/platform/wordpress.rb

@@ -79,7 +79,7 @@ module WPScan
         end
 
         def wordpress_hosted?
-          uri.host =~ /\.wordpress\.com$/i ? true : false
+          /\.wordpress\.com$/i.match?(uri.host) ? true : false
         end
 
         # @param [ String ] username

lib/wpscan/target/platform/wordpress/custom_directories.rb

@@ -112,9 +112,9 @@ module WPScan
         def url(path = nil)
           return @uri.to_s unless path
 
-          if path =~ %r{wp\-content/plugins}i
+          if %r{wp\-content/plugins}i.match?(path)
             path = +path.gsub('wp-content/plugins', plugins_dir)
-          elsif path =~ /wp\-content/i
+          elsif /wp\-content/i.match?(path)
             path = +path.gsub('wp-content', content_dir)
           elsif path[0] != '/' && sub_dir
             path = "#{sub_dir}/#{path}"