Rakefile in frostale-0.0.6 vs Rakefile in frostale-0.0.8

@@ -3,9 +3,10 @@
 
 begin
   require 'jeweler'
   Jeweler::Tasks.new do |gem|
     gem.name = "frostale"
+    gem.required_ruby_version = '>= 2.4.6'
     gem.summary = %Q{Active Directory Login for the Enterprise}
     gem.description = %Q{Frostale allows active directory login through a ruby gem.}
     gem.email = "[e-mail]"
     gem.homepage = "http://github.com/barce/frostale"
     gem.authors = ["barce"]