diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
index c547edd..5b3395c 100644
--- a/.github/workflows/codecov.yml
+++ b/.github/workflows/codecov.yml
@@ -4,6 +4,9 @@ on:
   push:
     branches:
       - master
+  pull_request:
+    branches:
+      - master
 jobs:
   codecov:
     runs-on: ubuntu-22.04
@@ -14,8 +17,7 @@ jobs:
           ruby-version: '2.7'
       - run: bundle update
       - run: bundle exec rake
-      - uses: codecov/codecov-action@v3
+      - uses: codecov/codecov-action@v4
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
-          file: coverage/.resultset.json
           fail_ci_if_error: true
diff --git a/.simplecov b/.simplecov
index 282adf3..76099de 100644
--- a/.simplecov
+++ b/.simplecov
@@ -18,21 +18,18 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-if Gem.win_platform?
-  SimpleCov.formatter = SimpleCov::Formatter::MultiFormatter[
-    SimpleCov::Formatter::HTMLFormatter
-  ]
-  SimpleCov.start do
-    add_filter '/test/'
-    add_filter '/features/'
-  end
-else
-  SimpleCov.formatter = SimpleCov::Formatter::MultiFormatter.new(
-    SimpleCov::Formatter::HTMLFormatter
-  )
-  SimpleCov.start do
-    add_filter '/test/'
-    add_filter '/features/'
-    minimum_coverage 90
-  end
+SimpleCov.formatter = if Gem.win_platform?
+                        SimpleCov::Formatter::MultiFormatter[
+                          SimpleCov::Formatter::HTMLFormatter
+                        ]
+                      else
+                        SimpleCov::Formatter::MultiFormatter.new(
+                          SimpleCov::Formatter::HTMLFormatter
+                        )
+                      end
+
+SimpleCov.start do
+  add_filter '/test/'
+  add_filter '/features/'
+  minimum_coverage 90
 end
diff --git a/Gemfile b/Gemfile
index 8bfca51..3ed1bba 100644
--- a/Gemfile
+++ b/Gemfile
@@ -30,5 +30,6 @@ gem 'rspec-rails', '5.1.2', require: false
 gem 'rubocop', '1.60.2', require: false
 gem 'rubocop-rspec', '2.22.0', require: false
 gem 'simplecov', '0.22.0', require: false
+gem 'simplecov-cobertura', '~> 2.1'
 gem 'slop', '4.9.2', require: false
 gem 'xcop', '0.7.1', require: false
diff --git a/README.md b/README.md
index 76b6767..28f8d56 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 [![rake](https://github.com/cqfn/pdd/actions/workflows/rake.yml/badge.svg)](https://github.com/cqfn/pdd/actions/workflows/rake.yml)
 [![PDD status](http://www.0pdd.com/svg?name=cqfn/pdd)](http://www.0pdd.com/p?name=cqfn/pdd)
-[![codecov](https://codecov.io/gh/cqfn/pdd/branch/master/graph/badge.svg)](https://codecov.io/gh/cqfn/pdd)
+[![codecov](https://codecov.io/gh/yegor256/pdd/branch/master/graph/badge.svg)](https://codecov.io/gh/yegor/pdd)
 [![Hits-of-Code](https://hitsofcode.com/github/cqfn/pdd)](https://hitsofcode.com/view/github/cqfn/pdd)
 [![License](https://img.shields.io/badge/license-MIT-green.svg)](https://github.com/cqfn/pdd/blob/master/LICENSE.txt)
 [![Gem Version](https://badge.fury.io/rb/pdd.svg)](http://badge.fury.io/rb/pdd)
@@ -25,39 +25,7 @@ Read
 [_PDD in Action_](http://www.yegor256.com/2017/04/05/pdd-in-action.html)
 and watch [this webinar](https://www.youtube.com/watch?v=nsYGC2aUwfQ).
 
-## Installation
-<details><summary>
-
-### Prerequisites: `Ruby installed` and `Libmagic`
-</summary>
-<details><summary>
-
-#### Ruby version 2.7+
-</summary>
-
-[Ruby installation instruction](https://www.ruby-lang.org/en/documentation/installation/)
-</details>
-<details>
-<summary>
-
-#### Libmagic library
-</summary>
-
-**For Debian/Ubuntu:**
-```bash
-$ apt install libmagic-dev
-```
-**For Mac**
-```bash
-$ brew install libmagic
-```
-**For Windows**
-Unfortunately, there is no easy way to install, please use WSL
-
-</details>
-</details>
-
-Then, install our gem:
+First, make sure Ruby 2.6+ and [`libmagic`](#how-to-install-libmagic) are installed. Then, install our gem:
 
 ```bash
 $ gem install pdd
@@ -70,6 +38,7 @@ $ pdd --help
 ```
 
 ## Usage
+
 You can exclude & include certain number of files from the search via these options:
 
 ```bash
@@ -106,6 +75,7 @@ $ pdd [--verbose] [--quiet] [--remove] [--skip-gitignore] [--skip-errors] \
       [--source <project_dir_path>] [--file puzzles_file.xml] [--include src/**/*.py] \
       [--format xml|html] [--rule min-words:5] [--exclude src/**/*.java]
 ```
+
 | Parameter               | Description                                                                           |
 |-------------------------|---------------------------------------------------------------------------------------|
 | --verbose               | Enable verbose (debug) mode. --file must be used in case of using this option         |
@@ -294,6 +264,24 @@ The most interesting parts of each puzzle are:
 
 - `lines` is where the puzzle is found, inside the file.
 
+## How to install libmagic
+
+For Debian/Ubuntu:
+
+```bash
+$ apt install libmagic-dev
+```
+
+For Mac:
+
+```bash
+$ brew install libmagic
+```
+
+Unfortunately, there is no easy way to install on Windows, try to use 
+[WSL](https://en.wikipedia.org/wiki/Windows_Subsystem_for_Linux) or 
+[Docker](https://www.docker.com/).
+
 ## How to contribute
 
 Read [these guidelines](https://www.yegor256.com/2014/04/15/github-guidelines.html).
diff --git a/test/test__helper.rb b/test/test__helper.rb
index f1610ae..f0240bb 100644
--- a/test/test__helper.rb
+++ b/test/test__helper.rb
@@ -23,6 +23,9 @@
 require 'simplecov'
 SimpleCov.start
 
+require 'simplecov-cobertura'
+SimpleCov.formatter = SimpleCov::Formatter::CoberturaFormatter
+
 require 'minitest/autorun'
 require_relative '../lib/pdd'