mail-notify.gemspec in mail-notify-0.2.2 vs mail-notify.gemspec in mail-notify-0.2.3

- old
+ new

@@ -31,7 +31,7 @@
   spec.add_development_dependency 'rspec-rails', '~> 3.8'
   spec.add_development_dependency 'rubocop', '~> 0.63'
   spec.add_development_dependency 'sqlite3', '~> 1.4.1'
 
   spec.add_dependency 'actionmailer', '>= 5.0', '< 6.1'
-  spec.add_dependency 'notifications-ruby-client', '~> 3.1'
+  spec.add_dependency 'notifications-ruby-client', '~> 4.0.0'
 end