diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..6898ba2
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,29 @@
+name: CI
+
+on:
+  push:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby: ['3.3', '3.4', '4.0']
+        gemfile:
+          - gemfiles/rails_7.gemfile
+          - gemfiles/rails_8.gemfile
+    env:
+      BUNDLE_GEMFILE: ${{ matrix.gemfile }}
+    steps:
+      - uses: actions/checkout@v7
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+      - name: Create tmp dir
+        run: mkdir -p tmp
+      - name: RuboCop
+        run: bundle exec rubocop
+      - name: RSpec
+        run: bundle exec rspec
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 815a11c..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,24 +0,0 @@
-language: ruby
-cache: bundler
-sudo: false
-
-gemfile:
-  - gemfiles/rails_6.gemfile
-  - gemfiles/rails_7.gemfile
-  - gemfiles/rails_8.gemfile
-
-rvm:
-  - 3.2
-  - 3.3
-  - 3.4
-  - 4.0
-
-notifications:
-  email:
-    on_success: change
-    on_failure: always
-
-script:
-  - mkdir ./tmp/
-  - bundle exec rubocop
-  - bundle exec rspec
diff --git a/Appraisals b/Appraisals
index df8942c..262d0e6 100644
--- a/Appraisals
+++ b/Appraisals
@@ -1,12 +1,5 @@
 # frozen_string_literal: true
 
-appraise 'rails-6' do
-  gem 'rails', '6'
-  gem 'mutex_m'
-  gem 'benchmark'
-  gem 'ostruct'
-end
-
 appraise 'rails-7' do
   gem 'rails', '7'
   gem 'mutex_m'
diff --git a/gemfiles/rails_6.gemfile b/gemfiles/rails_6.gemfile
deleted file mode 100644
index f02041e..0000000
--- a/gemfiles/rails_6.gemfile
+++ /dev/null
@@ -1,24 +0,0 @@
-# This file was generated by Appraisal
-
-source "https://rubygems.org"
-
-gem "rails", "6"
-gem "mutex_m"
-gem "benchmark"
-gem "ostruct"
-
-group :development, :test do
-  gem "coveralls", require: false
-  gem "pry"
-  gem "rubocop"
-  gem "rubocop-rake"
-  gem "rubocop-rspec"
-  gem "appraisal"
-  gem "rake"
-  gem "rspec"
-  gem "simplecov"
-  gem "sinatra"
-  gem "webmock"
-end
-
-gemspec path: "../"
diff --git a/lib/mifiel/document.rb b/lib/mifiel/document.rb
index 61bbb81..9e33ab5 100644
--- a/lib/mifiel/document.rb
+++ b/lib/mifiel/document.rb
@@ -23,7 +23,7 @@ class Document < Mifiel::Base
     post :create_from_template, '/templates/:template_id/generate_document', timeout: 60
     post :create_many_from_template, '/templates/:template_id/generate_documents', timeout: 60
 
-    # rubocop:disable Metrics/MethodLength
+    # rubocop:disable-next Metrics/MethodLength
     def self.create(args)
       signatories = args[:signatories]
       file = args[:file]
@@ -43,7 +43,6 @@ def self.create(args)
       payload = args.merge(payload).compact
       process_request('/documents', :post, payload: payload, type: :form_multipart)
     end
-    # rubocop:enable Metrics/MethodLength
 
     # @deprecated
     def request_signature(email, cc: nil)
diff --git a/mise.toml b/mise.toml
new file mode 100644
index 0000000..96bdb30
--- /dev/null
+++ b/mise.toml
@@ -0,0 +1,2 @@
+[tools]
+ruby = "4"
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 38f7613..145c0a2 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -11,8 +11,6 @@
   add_filter '/spec/'
 end
 
-Coveralls.wear!
-
 Dir['./spec/support/**/*.rb'].each { |f| require f }
 
 RSpec.configure do |config|