diff --git a/github_changelog_generator.gemspec b/github_changelog_generator.gemspec
index ec22619..a621547 100644
--- a/github_changelog_generator.gemspec
+++ b/github_changelog_generator.gemspec
@@ -30,5 +30,4 @@ Gem::Specification.new do |spec|
   spec.add_runtime_dependency("faraday-http-cache")
   spec.add_runtime_dependency("activesupport")
   spec.add_runtime_dependency("retriable", ["~> 2.1"])
-
 end
diff --git a/lib/github_changelog_generator/octo_fetcher.rb b/lib/github_changelog_generator/octo_fetcher.rb
index a1f1f0f..2e68f51 100644
--- a/lib/github_changelog_generator/octo_fetcher.rb
+++ b/lib/github_changelog_generator/octo_fetcher.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
-require 'retriable'
+require "retriable"
 module GitHubChangelogGenerator
   # A Fetcher responsible for all requests to GitHub and all basic manipulation with related data
   # (such as filtering, validating, e.t.c)
@@ -297,12 +297,12 @@ Make sure, that you push tags to remote repo via 'git push --tags'"
     # Exponential backoff
     def retry_options
       {
-        :on            => [Octokit::Forbidden],
-        :tries         => MAX_FORBIDDEN_RETRIES,
-        :base_interval => sleep_base_interval,
-        :multiplier    => 1.0,
-        :rand_factor   => 0.0,
-        :on_retry      => retry_callback
+        on: [Octokit::Forbidden],
+        tries: MAX_FORBIDDEN_RETRIES,
+        base_interval: sleep_base_interval,
+        multiplier: 1.0,
+        rand_factor: 0.0,
+        on_retry: retry_callback
       }
     end
 
@@ -311,7 +311,7 @@ Make sure, that you push tags to remote repo via 'git push --tags'"
     end
 
     def retry_callback
-      Proc.new do |exception, try, elapsed_time, next_interval|
+      proc do |exception, try, elapsed_time, next_interval|
         Helper.log.warn("RETRY - #{exception.class}: '#{exception.message}'")
         Helper.log.warn("#{try} tries in #{elapsed_time} seconds and #{next_interval} seconds until the next try")
         Helper.log.warn GH_RATE_LIMIT_EXCEEDED_MSG
diff --git a/lib/github_changelog_generator/parser.rb b/lib/github_changelog_generator/parser.rb
index 9323e46..c62f187 100755
--- a/lib/github_changelog_generator/parser.rb
+++ b/lib/github_changelog_generator/parser.rb
@@ -42,7 +42,7 @@ module GitHubChangelogGenerator
 
     # setup parsing options
     def self.setup_parser(options)
-      parser = OptionParser.new do |opts|
+      parser = OptionParser.new do |opts| # rubocop:disable Metrics/BlockLength
         opts.banner = "Usage: github_changelog_generator [options]"
         opts.on("-u", "--user [USER]", "Username of the owner of target GitHub repo") do |last|
           options[:user] = last