diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 9d7a130..8ce5ee9 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,4 +1,4 @@
-name: Deploy production to Heroku
+name: Rubocop Linter
 on:
   push:
     branches:
diff --git a/app/models/link.rb b/app/models/link.rb
index 98df1d7..497da7f 100644
--- a/app/models/link.rb
+++ b/app/models/link.rb
@@ -1,11 +1,14 @@
 # frozen_string_literal: true
 
+VALID_URL_REGEX = /\A(?:https?:\/\/)?(?:[^@\n]+@)?(?:www\.)? \
+                    ([a-zA-Z0-9-]+\.[a-zA-Z]{2,}(?:\.[a-zA-Z]{2,})?) \
+                    (?:\/[^\s]*)?\z/
+
 class Link < ApplicationRecord
   validates :url, presence: true
   validates :slug, uniqueness: true
 
-  validates :url,
-            format: { with: /\A#{URI::DEFAULT_PARSER.make_regexp(%w[http https])}\z/, message: 'invalid format' }
+  validates :url, format: { with: VALID_URL_REGEX, message: 'invalid format' }
   validates :url, length: { within: 3..30_000, on: :create, message: 'max length is 30000' }
 
   before_validation :generate_slug
diff --git a/app/views/links/_form.html.erb b/app/views/links/_form.html.erb
index d3da99b..f9d9d32 100644
--- a/app/views/links/_form.html.erb
+++ b/app/views/links/_form.html.erb
@@ -4,11 +4,11 @@
 			Shorten an url
 		</label>
 		<div class="mt-4 flex rounded-md shadow-sm">
-			<%= f.text_field :url, data: { target: "links.url" }, placeholder: "https://google.com", class: "focus:ring-indigo-500 focus:border-indigo-500 flex-1 block w-full rounded-none rounded-md sm:text-sm border-gray-300" %>
+      <%= f.text_field :url, pattern: '(?:https?:\/\/)?(?:[^@\n]+@)?(?:www\.)?([a-zA-Z0-9-]+\.[a-zA-Z]{2,}(?:\.[a-zA-Z]{2,})?)(?:\/[^\s]*)?', data: { target: "links.url" }, placeholder: "https://google.com", class: "focus:ring-indigo-500 focus:border-indigo-500 flex-1 block w-full rounded-none rounded-md sm:text-sm border-gray-300" %>
 		</div>
 	</div>
 
 	<div class="py-3 text-right">
 		<%= f.submit "Generate", class: "inline-flex w-full sm:w-auto justify-center py-2 px-4 border border-transparent shadow-sm text-sm font-medium rounded-md text-white bg-indigo-600 hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500" %>
 	</div>
-<% end %>
\ No newline at end of file
+<% end %>