diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index fad74c2..ead50ca 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -40,6 +40,8 @@ jobs:
           -
             os: ubuntu-latest
             php-version: "8.0"
+            coverage: xdebug
+            phpunit-options: --coverage-clover coverage.xml
           -
             os: ubuntu-latest
             php-version: "8.1"
@@ -63,7 +65,7 @@ jobs:
         with:
           php-version: ${{ matrix.php-version }}
           tools: composer
-          coverage: none
+          coverage: ${{ matrix.coverage }}
           extensions: intl
       -
         name: Checkout
@@ -73,4 +75,14 @@ jobs:
         run: composer update --ansi --no-interaction --no-progress
       -
         name: Run PHPUnit
-        run: composer run-script test --ansi --no-interaction
+        run: composer run-script test --ansi --no-interaction -- ${{ matrix.phpunit-options }}
+      -
+        name: Download Coveralls
+        if: matrix.coverage
+        run: curl -sSLf -o php-coveralls.phar https://github.com/php-coveralls/php-coveralls/releases/download/v2.7.0/php-coveralls.phar
+      -
+        name: Upload coverage
+        if: matrix.coverage
+        env:
+          COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: php php-coveralls.phar --ansi --no-interaction --coverage_clover=coverage.xml  --json_path=coverage.json -v
diff --git a/.gitignore b/.gitignore
index 5c0f0a3..0a383d6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,6 @@
 /composer.lock
 /.php-cs-fixer.cache
 /.phpunit.result.cache
+/coverage.json
+/coverage.xml
+/php-coveralls.phar
diff --git a/README.md b/README.md
index 66b9169..8a81f48 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
 [![Tests](https://github.com/mlocati/comuni-italiani/actions/workflows/tests.yml/badge.svg)](https://github.com/mlocati/comuni-italiani/actions/workflows/tests.yml)
+[![Coverage](https://coveralls.io/repos/github/mlocati/comuni-italiani/badge.svg?branch=main)](https://coveralls.io/github/mlocati/comuni-italiani?branch=main)
 
 ## Comuni Italiani
 
diff --git a/phpunit.xml b/phpunit.xml
index 533b070..49beeef 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -13,4 +13,13 @@
             <directory>test/tests</directory>
         </testsuite>
     </testsuites>
+    <coverage>
+        <include>
+            <directory>src</directory>
+        </include>
+        <exclude>
+            <directory>src/Build</directory>
+            <directory>src/data</directory>
+        </exclude>
+    </coverage>
 </phpunit>