diff --git a/lib/openid_connect.rb b/lib/openid_connect.rb
index 0ad7b16..3660c05 100644
--- a/lib/openid_connect.rb
+++ b/lib/openid_connect.rb
@@ -7,7 +7,8 @@
 require 'active_model'
 require 'tzinfo'
 require 'validate_url'
-require 'validate_email'
+require 'email_validator/strict'
+require 'mail'
 require 'attr_required'
 require 'attr_optional'
 require 'json/jwt'
diff --git a/openid_connect.gemspec b/openid_connect.gemspec
index 9c63588..5a72801 100644
--- a/openid_connect.gemspec
+++ b/openid_connect.gemspec
@@ -16,7 +16,8 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency "attr_required", ">= 1.0.0"
   s.add_runtime_dependency "activemodel"
   s.add_runtime_dependency "validate_url"
-  s.add_runtime_dependency "validate_email"
+  s.add_runtime_dependency "email_validator"
+  s.add_runtime_dependency "mail"
   s.add_runtime_dependency 'faraday', '~> 2.0'
   s.add_runtime_dependency 'faraday-follow_redirects'
   s.add_runtime_dependency "json-jwt", ">= 1.16"