diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d64b985..bddc421 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -27,7 +27,7 @@ jobs:
           - '7.1'
           - '7.2'
           - '7.3'
-          - '7.4'
+          # PHP 7.4 is tested in coverage section
 
     steps:
       - name: Checkout code
@@ -48,7 +48,38 @@ jobs:
         run: ./vendor/bin/parallel-lint --exclude vendor . --exclude git . --checkstyle | cs2pr
 
       - name: 'Run unit tests'
-        run: ./vendor/bin/phpunit
+        run: composer phpunit
 
       - name: 'Check var dump on own code'
         run: ./var-dump-check src
+
+  coverage:
+    needs: test
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '7.4'
+          ini-values: zend.assertions=1, error_reporting=-1, display_errors=On
+          coverage: xdebug
+
+      - name: Install Composer dependencies - normal
+        uses: "ramsey/composer-install@v2"
+
+      - name: Run the unit tests with code coverage
+        run: composer coverage
+
+      - name: Install Coveralls
+        if: ${{ success() }}
+        run: composer require php-coveralls/php-coveralls:"^2.5.2" --no-interaction
+
+      - name: Upload coverage results to Coveralls
+        if: ${{ success() }}
+        env:
+          COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: vendor/bin/php-coveralls -v -x build/logs/clover.xml
diff --git a/README.md b/README.md
index f5dad38..94cccda 100644
--- a/README.md
+++ b/README.md
@@ -82,3 +82,4 @@ or setting for ANT:
 [![Build Status](https://github.com/php-parallel-lint/PHP-Var-Dump-Check/actions/workflows/test.yml/badge.svg)](https://github.com/php-parallel-lint/PHP-Var-Dump-Check/actions/workflows/test.yml)
 [![Downloads this Month](https://img.shields.io/packagist/dm/php-parallel-lint/php-var-dump-check.svg)](https://packagist.org/packages/php-parallel-lint/php-var-dump-check)
 [![Latest stable](https://img.shields.io/packagist/v/php-parallel-lint/php-var-dump-check.svg)](https://packagist.org/packages/php-parallel-lint/php-var-dump-check)
+[![Coverage Status](https://coveralls.io/repos/github/php-parallel-lint/php-var-dump-check/badge.svg?branch=master)](https://coveralls.io/github/php-parallel-lint/php-var-dump-check?branch=master)
diff --git a/composer.json b/composer.json
index 412752e..51c000f 100644
--- a/composer.json
+++ b/composer.json
@@ -24,5 +24,17 @@
     "bin": ["var-dump-check"],
     "replace": {
         "jakub-onderka/php-var-dump-check": "*"
+    },
+    "scripts" : {
+        "phpunit": [
+            "@php ./vendor/phpunit/phpunit/phpunit --no-coverage"
+        ],
+        "coverage": [
+            "@php ./vendor/phpunit/phpunit/phpunit"
+        ]
+    },
+    "scripts-descriptions": {
+        "phpunit": "PHP unit",
+        "coverage": "PHP unit with code coverage"
     }
 }
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 154f6ee..e965e1a 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,18 +1,39 @@
-<phpunit bootstrap="tests/bootstrap.php"
-         backupGlobals="false"
-         backupStaticAttributes="false"
-         colors="true"
-         convertDeprecationsToExceptions="true"
-         convertErrorsToExceptions="true"
-         convertNoticesToExceptions="true"
-         convertWarningsToExceptions="true"
-         processIsolation="false"
-         stopOnFailure="false"
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.2/phpunit.xsd"
+        backupGlobals="true"
+        beStrictAboutTestsThatDoNotTestAnything="true"
+        bootstrap="./vendor/autoload.php"
+        colors="true"
+        convertDeprecationsToExceptions="true"
+        convertErrorsToExceptions="true"
+        convertNoticesToExceptions="true"
+        convertWarningsToExceptions="true"
+        forceCoversAnnotation="true"
+        stopOnFailure="false"
+        verbose="true"
 >
+
     <testsuites>
-        <testsuite name="Default tests">
-            <directory>tests</directory>
+        <testsuite name="PHP-Var-Dump-Check">
+            <directory suffix="Test.php">tests</directory>
         </testsuite>
     </testsuites>
 
+    <filter>
+        <whitelist addUncoveredFilesFromWhitelist="true">
+            <directory suffix=".php">src</directory>
+        </whitelist>
+    </filter>
+
+    <logging>
+        <log type="coverage-clover" target="build/logs/clover.xml"/>
+        <log type="coverage-html" target="build/coverage/"/>
+        <log type="coverage-text" target="php://stdout" showOnlySummary="true"/>
+    </logging>
+
+    <php>
+        <ini name="memory_limit" value="256M"/>
+    </php>
 </phpunit>