diff --git a/aws-ses.gemspec b/aws-ses.gemspec
index d904916..a412532 100644
--- a/aws-ses.gemspec
+++ b/aws-ses.gemspec
@@ -8,6 +8,8 @@ Gem::Specification.new do |s|
   s.name = "aws-ses".freeze
   s.version = "0.7.1"
 
+  s.required_ruby_version = '>= 2.0.0'
+  
   s.required_rubygems_version = Gem::Requirement.new(">= 0".freeze) if s.respond_to? :required_rubygems_version=
   s.require_paths = ["lib".freeze]
   s.authors = ["Drew Blas".freeze, "Marcel Molina Jr.".freeze]