diff --git a/app/models/email_address.rb b/app/models/email_address.rb
index ce6bd5d..c1bafab 100644
--- a/app/models/email_address.rb
+++ b/app/models/email_address.rb
@@ -8,7 +8,7 @@ class EmailAddress < ApplicationRecord
 
   before_save :downcase_email
 
-  VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i
+  VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]{2,}\z/i
   validates :email, presence: true, length: { maximum: 255 },
                     format: { with: VALID_EMAIL_REGEX },
                     uniqueness: true