diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index eae3571..fd57ea0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -47,15 +47,13 @@ jobs:
         if: ${{ matrix.php-version != env.COVERAGE_PHP_VERSION }}
 
       - name: Run PHPUnit with coverage
-        run: |
-          mkdir -p mkdir -p build/logs
-          vendor/bin/phpunit --coverage-clover build/logs/clover.xml
+        run: vendor/bin/phpunit --coverage-clover clover.xml
         env:
           USE_PHP_EXTENSIONS: ${{ matrix.use-extensions }}
         if: ${{ matrix.php-version == env.COVERAGE_PHP_VERSION }}
 
-      - name: Upload coverage report to Coveralls
-        run: vendor/bin/php-coveralls --coverage_clover=build/logs/clover.xml -v
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v5
         env:
-          COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
         if: ${{ matrix.php-version == env.COVERAGE_PHP_VERSION }}
diff --git a/README.md b/README.md
index 745cc2a..cc69951 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 A PHP validation library.
 
 [![Build Status](https://github.com/brick/validation/workflows/CI/badge.svg)](https://github.com/brick/validation/actions)
-[![Coverage Status](https://coveralls.io/repos/github/brick/validation/badge.svg?branch=master)](https://coveralls.io/github/brick/validation?branch=master)
+[![Coverage](https://codecov.io/github/brick/validation/graph/badge.svg)](https://codecov.io/github/brick/validation)
 [![Latest Stable Version](https://poser.pugx.org/brick/validation/v/stable)](https://packagist.org/packages/brick/validation)
 [![License](https://img.shields.io/badge/license-MIT-blue.svg)](http://opensource.org/licenses/MIT)
 
diff --git a/composer.json b/composer.json
index 4221c27..46af1ed 100644
--- a/composer.json
+++ b/composer.json
@@ -12,8 +12,7 @@
     "php": "^7.2 || ^8.0"
   },
   "require-dev": {
-    "phpunit/phpunit": "^8.0 || ^9.0",
-    "php-coveralls/php-coveralls": "^2.0"
+    "phpunit/phpunit": "^8.0 || ^9.0"
   },
   "suggest": {
     "ext-mbstring": "Speeds up StringValidator"