diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index f4533c2..12b6a08 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -12,7 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        php-version: ['7.3', '7.4']
+        php-version: ['7.3', '7.4', '8.0']
         dependencies: ['']
         include:
           - { php-version: '7.3', dependencies: '--prefer-lowest --prefer-stable' }
@@ -40,6 +40,7 @@ jobs:
           ./vendor/bin/phpunit --configuration ./src-tests/phpunit.xml --exclude-group integration --coverage-clover ./src-tests/logs/clover.xml
 
       - name: Submit coverage to Coveralls
+        if: ${{ matrix.php-version < 8.0 }} # Code coverage on PHP 8 is not supported with PHPUnit 8
         env:
           COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           COVERALLS_PARALLEL: true
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 64df37c..e0b5adf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 ### Added
 - `--parallel-limit` (`-l`) option of `run` command to allow limiting maximum number of tests being run simultaneously.
 - Show test duration in timeline tooltips.
+- PHP 8 support.
 
 ### Changed
 - Require PHP 7.3+ and Symfony 5 components.
diff --git a/composer.json b/composer.json
index b26f550..0992f97 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
         }
     ],
     "require": {
-        "php": "^7.3",
+        "php": "^7.3 || ^8.0",
         "ext-SimpleXML": "*",
         "ext-curl": "*",
         "ext-dom": "*",