diff --git a/.github/workflows/rspec.yml b/.github/workflows/rspec.yml
index e9e2e7a..1d5c3f2 100644
--- a/.github/workflows/rspec.yml
+++ b/.github/workflows/rspec.yml
@@ -13,10 +13,15 @@ jobs:
       BUNDLE_JOBS: 4
       BUNDLE_RETRY: 3
       CI: true
+      COVERAGE: ${{ matrix.coverage }}
     strategy:
       fail-fast: false
       matrix:
         ruby: ["2.7", "3.0", "3.1"]
+        coverage: ["false"]
+        include:
+          - ruby: "3.2"
+            coverage: "true"
     steps:
     - uses: actions/checkout@v3
     - uses: ruby/setup-ruby@v1
@@ -26,3 +31,9 @@ jobs:
     - name: Run RSpec
       run: |
         bundle exec rspec
+    - name: Coveralls
+      if: ${{ matrix.coverage == 'true' }}
+      uses: coverallsapp/github-action@master
+      with:
+        github-token: ${{ secrets.github_token }}
+        coveralls-endpoint: ${{ secrets.COVERALLS_ENDPOINT }}
diff --git a/Gemfile b/Gemfile
index b0feda1..efd3d42 100644
--- a/Gemfile
+++ b/Gemfile
@@ -14,3 +14,8 @@ local_gemfile = "#{File.dirname(__FILE__)}/Gemfile.local"
 if File.exist?(local_gemfile)
   eval(File.read(local_gemfile)) # rubocop:disable Security/Eval
 end
+
+if ENV["COVERAGE"] == "true"
+  gem "simplecov"
+  gem "simplecov-lcov"
+end
diff --git a/LICENSE.txt b/LICENSE.txt
index a37e096..a3654d9 100644
--- a/LICENSE.txt
+++ b/LICENSE.txt
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2021 Vladimir Dementyev, Ruslan Shakirov
+Copyright (c) 2021-2023 Vladimir Dementyev, Ruslan Shakirov
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index c38f474..a83c9f9 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,5 +1,17 @@
 # frozen_string_literal: true
 
+if ENV["COVERAGE"] == "true"
+  require "simplecov"
+  require "simplecov-lcov"
+  SimpleCov::Formatter::LcovFormatter.config do |c|
+    c.report_with_single_file = true
+    c.single_report_path = "coverage/lcov.info"
+  end
+
+  SimpleCov.formatter = SimpleCov::Formatter::LcovFormatter
+  SimpleCov.start
+end
+
 require "debug" unless ENV["CI"]
 
 require "active_support"