diff --git a/.rubocop.yml b/.rubocop.yml
index 3364cd5..f4d1051 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,3 +1,6 @@
+# Rubocop does not support 2.0
+Gemspec/RequiredRubyVersion: {Enabled: false}
+
 Rails: {Enabled: true}
 
 Layout/AlignParameters:
diff --git a/Gemfile b/Gemfile
index db13674..2bc1ec0 100644
--- a/Gemfile
+++ b/Gemfile
@@ -14,7 +14,7 @@ group :development do
   gem 'rspec-its', '~> 1.1.0'
   gem 'rspec-rails', '~> 3.5.0'
 
-  gem 'rubocop', '~> 0.51.0'
+  gem 'rubocop', '~> 0.52.1'
 
   gem 'coveralls', '~> 0.8.2', require: false
 end
diff --git a/lib/telegram/bot/client.rb b/lib/telegram/bot/client.rb
index 83f31a9..b04032e 100644
--- a/lib/telegram/bot/client.rb
+++ b/lib/telegram/bot/client.rb
@@ -4,7 +4,7 @@ require 'httpclient'
 module Telegram
   module Bot
     class Client
-      URL_TEMPLATE = 'https://api.telegram.org/bot%s/'.freeze
+      URL_TEMPLATE = 'https://api.telegram.org/bot%<token>s/'.freeze
 
       autoload :TypedResponse, 'telegram/bot/client/typed_response'
       extend Initializers
@@ -44,7 +44,7 @@ module Telegram
         @client = HTTPClient.new
         @token = token || options[:token]
         @username = username || options[:username]
-        @base_uri = format URL_TEMPLATE, self.token
+        @base_uri = format(URL_TEMPLATE, token: self.token)
       end
 
       def request(action, body = {})
diff --git a/spec/telegram/bot/client_spec.rb b/spec/telegram/bot/client_spec.rb
index 396fee6..b62c871 100644
--- a/spec/telegram/bot/client_spec.rb
+++ b/spec/telegram/bot/client_spec.rb
@@ -52,7 +52,7 @@ RSpec.describe Telegram::Bot::Client do
   describe '#request' do
     subject { -> { instance.request(action, request_body) } }
     let(:action) { :some_action }
-    let(:url) { "#{format described_class::URL_TEMPLATE, token}#{action}" }
+    let(:url) { "#{format(described_class::URL_TEMPLATE, token: token)}#{action}" }
     let(:request_body) { double(:body) }
     let(:prepared_body) { double(:prepared_body) }
     let(:response) { HTTP::Message.new_response(body).tap { |x| x.status = status } }