griddler-sendgrid.gemspec in griddler-sendgrid-1.0.1 vs griddler-sendgrid.gemspec in griddler-sendgrid-1.1.0

@@ -18,7 +18,8 @@
   spec.require_paths = ['lib']
 
   spec.add_development_dependency 'rake'
   spec.add_development_dependency 'rspec', '~> 3.5'
 
-  spec.add_dependency 'griddler'
+  spec.add_dependency 'griddler', '>= 1.5.2'
+  spec.add_dependency 'mail', '>= 2.7.0'
 end