diff --git a/.github/workflows/standardrb-linter.yml b/.github/workflows/standardrb-linter.yml
new file mode 100644
index 0000000..794668e
--- /dev/null
+++ b/.github/workflows/standardrb-linter.yml
@@ -0,0 +1,14 @@
+name: StandardRB
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: StandardRB Linter
+      uses: andrewmcodes/standardrb-action@v0.0.2
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        RUBY_VERSION: 2.7
diff --git a/Gemfile b/Gemfile
index 39b6e67..a64699f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,10 +1,11 @@
-source 'https://rubygems.org'
+source "https://rubygems.org"
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
-gem 'octokit', '~> 4.20'
-gem 'activesupport', '~> 6.1.1'
+gem "octokit", "~> 4.20"
+gem "activesupport", "~> 6.1.1"
 
 group :test, :development do
-  gem 'rspec'
-  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
+  gem "byebug", platforms: [:mri, :mingw, :x64_mingw]
+  gem "rspec"
+  gem "standard"
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 0d18a0d..9a717a2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,6 +9,7 @@ GEM
       zeitwerk (~> 2.3)
     addressable (2.8.0)
       public_suffix (>= 2.0.2, < 5.0)
+    ast (2.4.2)
     byebug (11.1.3)
     concurrent-ruby (1.1.7)
     diff-lcs (1.4.4)
@@ -24,7 +25,13 @@ GEM
     octokit (4.20.0)
       faraday (>= 0.9)
       sawyer (~> 0.8.0, >= 0.5.3)
+    parallel (1.20.1)
+    parser (3.0.2.0)
+      ast (~> 2.4.1)
     public_suffix (4.0.6)
+    rainbow (3.0.0)
+    regexp_parser (2.1.1)
+    rexml (3.2.5)
     rspec (3.10.0)
       rspec-core (~> 3.10.0)
       rspec-expectations (~> 3.10.0)
@@ -38,12 +45,31 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.10.0)
     rspec-support (3.10.1)
+    rubocop (1.18.4)
+      parallel (~> 1.10)
+      parser (>= 3.0.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml
+      rubocop-ast (>= 1.8.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.10.0)
+      parser (>= 3.0.1.1)
+    rubocop-performance (1.11.4)
+      rubocop (>= 1.7.0, < 2.0)
+      rubocop-ast (>= 0.4.0)
+    ruby-progressbar (1.11.0)
     ruby2_keywords (0.0.2)
     sawyer (0.8.2)
       addressable (>= 2.3.5)
       faraday (> 0.8, < 2.0)
+    standard (1.1.7)
+      rubocop (= 1.18.4)
+      rubocop-performance (= 1.11.4)
     tzinfo (2.0.4)
       concurrent-ruby (~> 1.0)
+    unicode-display_width (2.0.0)
     zeitwerk (2.4.2)
 
 PLATFORMS
@@ -55,6 +81,7 @@ DEPENDENCIES
   byebug
   octokit (~> 4.20)
   rspec
+  standard
 
 BUNDLED WITH
    2.2.3
diff --git a/app/.standard.yml b/app/.standard.yml
new file mode 100644
index 0000000..9317f11
--- /dev/null
+++ b/app/.standard.yml
@@ -0,0 +1,5 @@
+fix: true               # default: false
+parallel: true          # default: false
+format: progress        # default: Standard::Formatter
+ruby_version: 2.7.2     # default: RUBY_VERSION
+default_ignores: false  # default: true
diff --git a/app/errors/check_conclusion_not_allowed_error.rb b/app/errors/check_conclusion_not_allowed_error.rb
index aa07ded..b471cdf 100644
--- a/app/errors/check_conclusion_not_allowed_error.rb
+++ b/app/errors/check_conclusion_not_allowed_error.rb
@@ -3,7 +3,7 @@
 class CheckConclusionNotAllowedError < StandardError
   def initialize(allowed_conclusions)
     msg = "The conclusion of one or more checks were not allowed. Allowed conclusions are: "\
-          "#{allowed_conclusions.join(', ')}. This can be configured with the 'allowed-conclusions' param."
+          "#{allowed_conclusions.join(", ")}. This can be configured with the 'allowed-conclusions' param."
     super(msg)
   end
 end
diff --git a/app/spec/entrypoint_spec.rb b/app/spec/entrypoint_spec.rb
index 478f3a9..6184e37 100644
--- a/app/spec/entrypoint_spec.rb
+++ b/app/spec/entrypoint_spec.rb
@@ -1,12 +1,11 @@
 require "spec_helper"
 
-
 describe "entrypoint" do
   it "calls the GithubChecksVerifier service" do
     allow(GithubChecksVerifier).to receive(:call)
     allow(GithubChecksVerifier).to receive(:configure)
 
-    require_relative "../../entrypoint.rb"
+    require_relative "../../entrypoint"
 
     expect(GithubChecksVerifier).to have_received(:call)
   end
diff --git a/app/spec/services/github_checks_verifier_spec.rb b/app/spec/services/github_checks_verifier_spec.rb
index 0fb5df3..7b81618 100644
--- a/app/spec/services/github_checks_verifier_spec.rb
+++ b/app/spec/services/github_checks_verifier_spec.rb
@@ -30,7 +30,7 @@
       mock_api_response(all_successful_checks)
       service.workflow_name = "invoking_check"
       service.wait = 0
-      output = with_captured_stdout{ service.call }
+      output = with_captured_stdout { service.call }
 
       expect(output).to include("The requested check isn't complete yet, will check back in #{service.wait} seconds...")
     end
@@ -79,14 +79,14 @@
 
   describe "#fail_if_requested_check_never_run" do
     it "raises an exception if check_name is not empty and all_checks is" do
-      service.config.check_name = 'test'
+      service.config.check_name = "test"
       all_checks = []
       allow(service).to receive(:query_check_status).and_return all_checks
 
       expected_msg = "The requested check was never run against this ref, exiting..."
-      expect do
+      expect {
         service.call
-      end.to raise_error(SystemExit).and output(/#{expected_msg}/).to_stdout
+      }.to raise_error(SystemExit).and output(/#{expected_msg}/).to_stdout
     end
   end
 
@@ -100,10 +100,9 @@
 
       expected_msg = "The conclusion of one or more checks were not allowed. Allowed conclusions are: "\
                      "success, skipped. This can be configured with the 'allowed-conclusions' param."
-      expect do
+      expect {
         service.call
-      end.to raise_error(SystemExit).and output(/#{expected_msg}/).to_stdout
-
+      }.to raise_error(SystemExit).and output(/#{expected_msg}/).to_stdout
     end
 
     it "does not raise an exception if all checks conlusions are allowed" do
@@ -113,9 +112,9 @@
       ]
       allow(service).to receive(:query_check_status).and_return all_checks
 
-      expect do
+      expect {
         service.call
-      end.not_to raise_error
+      }.not_to raise_error
     end
   end
 
@@ -123,7 +122,7 @@
     it "prints successful message to standard output" do
       checks = [OpenStruct.new(name: "check_completed", status: "completed", conclusion: "success")]
       allow(service).to receive(:query_check_status).and_return checks
-      output = with_captured_stdout{ service.call }
+      output = with_captured_stdout { service.call }
 
       expect(output).to include("check_completed: completed (success)")
     end
@@ -138,7 +137,7 @@
 
       service.config.check_name = "check_name"
       service.send(:apply_filters, checks)
-      expect(checks.map(&:name)).to all( eq "check_name" )
+      expect(checks.map(&:name)).to all(eq "check_name")
     end
 
     it "does not filter by check_name if it's empty" do
@@ -186,7 +185,7 @@
         OpenStruct.new(name: "other_check", status: "queued")
       ]
 
-      service.check_regexp = '.?_check'
+      service.check_regexp = ".?_check"
       service.send(:apply_regexp_filter, checks)
 
       expect(checks.map(&:name)).to include("other_check")
diff --git a/app/spec/spec_helper.rb b/app/spec/spec_helper.rb
index 293653d..d861ff8 100644
--- a/app/spec/spec_helper.rb
+++ b/app/spec/spec_helper.rb
@@ -1,11 +1,11 @@
 # frozen_string_literal: true
 
-require 'byebug'
+require "byebug"
 
-services = Dir['./services/**/*.rb']
+services = Dir["./services/**/*.rb"]
 services.sort.each { |f| require f }
 
-test_helpers = Dir['./spec/support/**/*.rb']
+test_helpers = Dir["./spec/support/**/*.rb"]
 test_helpers.sort.each { |f| require f }
 
 RSpec.configure do |config|
diff --git a/app/spec/support/helpers.rb b/app/spec/support/helpers.rb
index 8c6b248..92c940b 100644
--- a/app/spec/support/helpers.rb
+++ b/app/spec/support/helpers.rb
@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 require "ostruct"
 require "json"
 module Helpers
@@ -18,12 +19,12 @@ def mock_api_response(checks)
   end
 
   def with_captured_stdout
-    original_stdout = $stdout  # capture previous value of $stdout
-    $stdout = StringIO.new     # assign a string buffer to $stdout
-    yield                      # perform the body of the user code
-    $stdout.string             # return the contents of the string buffer
+    original_stdout = $stdout # capture previous value of $stdout
+    $stdout = StringIO.new # assign a string buffer to $stdout
+    yield # perform the body of the user code
+    $stdout.string # return the contents of the string buffer
   ensure
-    $stdout = original_stdout  # restore $stdout to its previous value
+    $stdout = original_stdout # restore $stdout to its previous value
   end
 end
 
diff --git a/entrypoint.rb b/entrypoint.rb
index 60b1cf5..080a5e8 100755
--- a/entrypoint.rb
+++ b/entrypoint.rb
@@ -1,11 +1,11 @@
 #!/usr/bin/env ruby
-require_relative "./app/services/github_checks_verifier.rb"
+require_relative "./app/services/github_checks_verifier"
 require "octokit"
 
-allowed_conclusions, check_name, check_regexp, ref, token, verbose, wait, workflow_name  = ARGV
+allowed_conclusions, check_name, check_regexp, ref, token, verbose, wait, workflow_name = ARGV
 
 GithubChecksVerifier.configure do |config|
-  config.allowed_conclusions = allowed_conclusions.split(',').map(&:strip)
+  config.allowed_conclusions = allowed_conclusions.split(",").map(&:strip)
   config.check_name = check_name
   config.check_regexp = check_regexp
   config.client = Octokit::Client.new(access_token: token)