imap-backup.gemspec in imap-backup-6.3.0 vs imap-backup.gemspec in imap-backup-7.0.0.rc1

@@ -17,13 +17,15 @@
   gem.files         += %w[imap-backup.gemspec]
   gem.files         += %w[LICENSE README.md]
 
   gem.executables   = gem.files.grep(%r{^bin/}).map { |f| File.basename(f) }
   gem.require_paths = ["lib"]
-  gem.required_ruby_version = ">= 2.5"
+  gem.required_ruby_version = ">= 2.6"
 
   gem.add_runtime_dependency "highline"
   gem.add_runtime_dependency "mail"
+  gem.add_runtime_dependency "net-imap"
+  gem.add_runtime_dependency "net-smtp"
   gem.add_runtime_dependency "os"
   gem.add_runtime_dependency "rake"
   gem.add_runtime_dependency "thor", "~> 1.1"
   gem.add_runtime_dependency "thunderbird", ">= 0.0.0"